diff options
Diffstat (limited to 'extmod')
| -rw-r--r-- | extmod/machine_i2c.c | 641 | ||||
| -rw-r--r-- | extmod/machine_i2c.h | 58 | ||||
| -rw-r--r-- | extmod/machine_spi.c | 286 | ||||
| -rw-r--r-- | extmod/machine_spi.h | 58 |
4 files changed, 0 insertions, 1043 deletions
diff --git a/extmod/machine_i2c.c b/extmod/machine_i2c.c deleted file mode 100644 index 4129ace0a..000000000 --- a/extmod/machine_i2c.c +++ /dev/null @@ -1,641 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2016 Damien P. George - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include <stdio.h> -#include <stdint.h> -#include <string.h> - -#include "py/mperrno.h" -#include "py/mphal.h" -#include "py/runtime.h" -#include "extmod/machine_i2c.h" - -#include "supervisor/shared/translate.h" - -#if MICROPY_PY_MACHINE_I2C - -typedef mp_machine_soft_i2c_obj_t machine_i2c_obj_t; - -STATIC void mp_hal_i2c_delay(machine_i2c_obj_t *self) { - // We need to use an accurate delay to get acceptable I2C - // speeds (eg 1us should be not much more than 1us). - mp_hal_delay_us_fast(self->us_delay); -} - -STATIC void mp_hal_i2c_scl_low(machine_i2c_obj_t *self) { - mp_hal_pin_od_low(self->scl); -} - -STATIC int mp_hal_i2c_scl_release(machine_i2c_obj_t *self) { - uint32_t count = self->us_timeout; - - mp_hal_pin_od_high(self->scl); - mp_hal_i2c_delay(self); - // For clock stretching, wait for the SCL pin to be released, with timeout. - for (; mp_hal_pin_read(self->scl) == 0 && count; --count) { - mp_hal_delay_us_fast(1); - } - if (count == 0) { - return -MP_ETIMEDOUT; - } - return 0; // success -} - -STATIC void mp_hal_i2c_sda_low(machine_i2c_obj_t *self) { - mp_hal_pin_od_low(self->sda); -} - -STATIC void mp_hal_i2c_sda_release(machine_i2c_obj_t *self) { - mp_hal_pin_od_high(self->sda); -} - -STATIC int mp_hal_i2c_sda_read(machine_i2c_obj_t *self) { - return mp_hal_pin_read(self->sda); -} - -STATIC int mp_hal_i2c_start(machine_i2c_obj_t *self) { - mp_hal_i2c_sda_release(self); - mp_hal_i2c_delay(self); - int ret = mp_hal_i2c_scl_release(self); - if (ret != 0) { - return ret; - } - mp_hal_i2c_sda_low(self); - mp_hal_i2c_delay(self); - return 0; // success -} - -STATIC int mp_hal_i2c_stop(machine_i2c_obj_t *self) { - mp_hal_i2c_delay(self); - mp_hal_i2c_sda_low(self); - mp_hal_i2c_delay(self); - int ret = mp_hal_i2c_scl_release(self); - mp_hal_i2c_sda_release(self); - mp_hal_i2c_delay(self); - return ret; -} - -STATIC void mp_hal_i2c_init(machine_i2c_obj_t *self, uint32_t freq) { - self->us_delay = 500000 / freq; - if (self->us_delay == 0) { - self->us_delay = 1; - } - mp_hal_pin_open_drain(self->scl); - mp_hal_pin_open_drain(self->sda); - mp_hal_i2c_stop(self); // ignore error -} - -// return value: -// 0 - byte written and ack received -// 1 - byte written and nack received -// <0 - error, with errno being the negative of the return value -STATIC int mp_hal_i2c_write_byte(machine_i2c_obj_t *self, uint8_t val) { - mp_hal_i2c_delay(self); - mp_hal_i2c_scl_low(self); - - for (int i = 7; i >= 0; i--) { - if ((val >> i) & 1) { - mp_hal_i2c_sda_release(self); - } else { - mp_hal_i2c_sda_low(self); - } - mp_hal_i2c_delay(self); - int ret = mp_hal_i2c_scl_release(self); - if (ret != 0) { - mp_hal_i2c_sda_release(self); - return ret; - } - mp_hal_i2c_scl_low(self); - } - - mp_hal_i2c_sda_release(self); - mp_hal_i2c_delay(self); - int ret = mp_hal_i2c_scl_release(self); - if (ret != 0) { - return ret; - } - - int ack = mp_hal_i2c_sda_read(self); - mp_hal_i2c_delay(self); - mp_hal_i2c_scl_low(self); - - return ack; -} - -// return value: -// 0 - success -// <0 - error, with errno being the negative of the return value -STATIC int mp_hal_i2c_read_byte(machine_i2c_obj_t *self, uint8_t *val, int nack) { - mp_hal_i2c_delay(self); - mp_hal_i2c_scl_low(self); - mp_hal_i2c_delay(self); - - uint8_t data = 0; - for (int i = 7; i >= 0; i--) { - int ret = mp_hal_i2c_scl_release(self); - if (ret != 0) { - return ret; - } - data = (data << 1) | mp_hal_i2c_sda_read(self); - mp_hal_i2c_scl_low(self); - mp_hal_i2c_delay(self); - } - *val = data; - - // send ack/nack bit - if (!nack) { - mp_hal_i2c_sda_low(self); - } - mp_hal_i2c_delay(self); - int ret = mp_hal_i2c_scl_release(self); - if (ret != 0) { - mp_hal_i2c_sda_release(self); - return ret; - } - mp_hal_i2c_scl_low(self); - mp_hal_i2c_sda_release(self); - - return 0; // success -} - -// return value: -// >=0 - number of acks received -// <0 - error, with errno being the negative of the return value -int mp_machine_soft_i2c_writeto(mp_obj_base_t *self_in, uint16_t addr, const uint8_t *src, size_t len, bool stop) { - machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in; - - // start the I2C transaction - int ret = mp_hal_i2c_start(self); - if (ret != 0) { - return ret; - } - - // write the slave address - ret = mp_hal_i2c_write_byte(self, addr << 1); - if (ret < 0) { - return ret; - } else if (ret != 0) { - // nack received, release the bus cleanly - mp_hal_i2c_stop(self); - return -MP_ENODEV; - } - - // write the buffer to the I2C memory - int num_acks = 0; - while (len--) { - ret = mp_hal_i2c_write_byte(self, *src++); - if (ret < 0) { - return ret; - } else if (ret != 0) { - // nack received, stop sending - break; - } - ++num_acks; - } - - // finish the I2C transaction - if (stop) { - ret = mp_hal_i2c_stop(self); - if (ret != 0) { - return ret; - } - } - - return num_acks; -} - -// return value: -// 0 - success -// <0 - error, with errno being the negative of the return value -int mp_machine_soft_i2c_readfrom(mp_obj_base_t *self_in, uint16_t addr, uint8_t *dest, size_t len, bool stop) { - machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in; - - // start the I2C transaction - int ret = mp_hal_i2c_start(self); - if (ret != 0) { - return ret; - } - - // write the slave address - ret = mp_hal_i2c_write_byte(self, (addr << 1) | 1); - if (ret < 0) { - return ret; - } else if (ret != 0) { - // nack received, release the bus cleanly - mp_hal_i2c_stop(self); - return -MP_ENODEV; - } - - // read the bytes from the slave - while (len--) { - ret = mp_hal_i2c_read_byte(self, dest++, len == 0); - if (ret != 0) { - return ret; - } - } - - // finish the I2C transaction - if (stop) { - ret = mp_hal_i2c_stop(self); - if (ret != 0) { - return ret; - } - } - - return 0; // success -} - -/******************************************************************************/ -// MicroPython bindings for I2C - -STATIC void machine_i2c_obj_init_helper(machine_i2c_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { - enum { ARG_scl, ARG_sda, ARG_freq, ARG_timeout }; - static const mp_arg_t allowed_args[] = { - { MP_QSTR_scl, MP_ARG_REQUIRED | MP_ARG_OBJ }, - { MP_QSTR_sda, MP_ARG_REQUIRED | MP_ARG_OBJ }, - { MP_QSTR_freq, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 400000} }, - { MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 255} }, - }; - mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; - mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); - self->scl = mp_hal_get_pin_obj(args[ARG_scl].u_obj); - self->sda = mp_hal_get_pin_obj(args[ARG_sda].u_obj); - self->us_timeout = args[ARG_timeout].u_int; - mp_hal_i2c_init(self, args[ARG_freq].u_int); -} - -STATIC mp_obj_t machine_i2c_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { - // check the id argument, if given - if (n_args > 0) { - if (args[0] != MP_OBJ_NEW_SMALL_INT(-1)) { - #if defined(MICROPY_PY_MACHINE_I2C_MAKE_NEW) - // dispatch to port-specific constructor - extern mp_obj_t MICROPY_PY_MACHINE_I2C_MAKE_NEW(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args); - return MICROPY_PY_MACHINE_I2C_MAKE_NEW(type, n_args, args, kw_args); - #else - mp_raise_ValueError(translate("invalid I2C peripheral")); - #endif - } - --n_args; - ++args; - } - - // create new soft I2C object - machine_i2c_obj_t *self = m_new_obj(machine_i2c_obj_t); - self->base.type = &machine_i2c_type; - machine_i2c_obj_init_helper(self, n_args, args, kw_args); - return (mp_obj_t)self; -} - -STATIC mp_obj_t machine_i2c_obj_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { - machine_i2c_obj_init_helper(args[0], n_args - 1, args + 1, kw_args); - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_init_obj, 1, machine_i2c_obj_init); - -STATIC mp_obj_t machine_i2c_scan(mp_obj_t self_in) { - mp_obj_base_t *self = MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - mp_obj_t list = mp_obj_new_list(0, NULL); - // 7-bit addresses 0b0000xxx and 0b1111xxx are reserved - for (int addr = 0x08; addr < 0x78; ++addr) { - int ret = i2c_p->writeto(self, addr, NULL, 0, true); - if (ret == 0) { - mp_obj_list_append(list, MP_OBJ_NEW_SMALL_INT(addr)); - } - } - return list; -} -MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_scan_obj, machine_i2c_scan); - -STATIC mp_obj_t machine_i2c_start(mp_obj_t self_in) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - if (i2c_p->start == NULL) { - mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported")); - } - int ret = i2c_p->start(self); - if (ret != 0) { - mp_raise_OSError(-ret); - } - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_start_obj, machine_i2c_start); - -STATIC mp_obj_t machine_i2c_stop(mp_obj_t self_in) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - if (i2c_p->stop == NULL) { - mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported")); - } - int ret = i2c_p->stop(self); - if (ret != 0) { - mp_raise_OSError(-ret); - } - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_1(machine_i2c_stop_obj, machine_i2c_stop); - -STATIC mp_obj_t machine_i2c_readinto(size_t n_args, const mp_obj_t *args) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - if (i2c_p->read == NULL) { - mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported")); - } - - // get the buffer to read into - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE); - - // work out if we want to send a nack at the end - bool nack = (n_args == 2) ? true : mp_obj_is_true(args[2]); - - // do the read - int ret = i2c_p->read(self, bufinfo.buf, bufinfo.len, nack); - if (ret != 0) { - mp_raise_OSError(-ret); - } - - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readinto_obj, 2, 3, machine_i2c_readinto); - -STATIC mp_obj_t machine_i2c_write(mp_obj_t self_in, mp_obj_t buf_in) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - if (i2c_p->write == NULL) { - mp_raise_msg(&mp_type_OSError, translate("I2C operation not supported")); - } - - // get the buffer to write from - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ); - - // do the write - int ret = i2c_p->write(self, bufinfo.buf, bufinfo.len); - if (ret < 0) { - mp_raise_OSError(-ret); - } - - // return number of acks received - return MP_OBJ_NEW_SMALL_INT(ret); -} -MP_DEFINE_CONST_FUN_OBJ_2(machine_i2c_write_obj, machine_i2c_write); - -STATIC mp_obj_t machine_i2c_readfrom(size_t n_args, const mp_obj_t *args) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - mp_int_t addr = mp_obj_get_int(args[1]); - vstr_t vstr; - vstr_init_len(&vstr, mp_obj_get_int(args[2])); - bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]); - int ret = i2c_p->readfrom(self, addr, (uint8_t*)vstr.buf, vstr.len, stop); - if (ret < 0) { - mp_raise_OSError(-ret); - } - return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr); -} -MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readfrom_obj, 3, 4, machine_i2c_readfrom); - -STATIC mp_obj_t machine_i2c_readfrom_into(size_t n_args, const mp_obj_t *args) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - mp_int_t addr = mp_obj_get_int(args[1]); - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE); - bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]); - int ret = i2c_p->readfrom(self, addr, bufinfo.buf, bufinfo.len, stop); - if (ret < 0) { - mp_raise_OSError(-ret); - } - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_readfrom_into_obj, 3, 4, machine_i2c_readfrom_into); - -STATIC mp_obj_t machine_i2c_writeto(size_t n_args, const mp_obj_t *args) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - mp_int_t addr = mp_obj_get_int(args[1]); - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_READ); - bool stop = (n_args == 3) ? true : mp_obj_is_true(args[3]); - int ret = i2c_p->writeto(self, addr, bufinfo.buf, bufinfo.len, stop); - if (ret < 0) { - mp_raise_OSError(-ret); - } - // return number of acks received - return MP_OBJ_NEW_SMALL_INT(ret); -} -STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_i2c_writeto_obj, 3, 4, machine_i2c_writeto); - -STATIC int read_mem(mp_obj_t self_in, uint16_t addr, uint32_t memaddr, uint8_t addrsize, uint8_t *buf, size_t len) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - uint8_t memaddr_buf[4]; - size_t memaddr_len = 0; - for (int16_t i = addrsize - 8; i >= 0; i -= 8) { - memaddr_buf[memaddr_len++] = memaddr >> i; - } - int ret = i2c_p->writeto(self, addr, memaddr_buf, memaddr_len, false); - if (ret != memaddr_len) { - // must generate STOP - i2c_p->writeto(self, addr, NULL, 0, true); - return ret; - } - return i2c_p->readfrom(self, addr, buf, len, true); -} - -#define MAX_MEMADDR_SIZE (4) -#define BUF_STACK_SIZE (12) - -STATIC int write_mem(mp_obj_t self_in, uint16_t addr, uint32_t memaddr, uint8_t addrsize, const uint8_t *buf, size_t len) { - mp_obj_base_t *self = (mp_obj_base_t*)MP_OBJ_TO_PTR(self_in); - mp_machine_i2c_p_t *i2c_p = (mp_machine_i2c_p_t*)mp_proto_get(self, QSTR_protocol_i2c); - - // need some memory to create the buffer to send; try to use stack if possible - uint8_t buf2_stack[MAX_MEMADDR_SIZE + BUF_STACK_SIZE]; - uint8_t *buf2; - size_t buf2_alloc = 0; - if (len <= BUF_STACK_SIZE) { - buf2 = buf2_stack; - } else { - buf2_alloc = MAX_MEMADDR_SIZE + len; - buf2 = m_new(uint8_t, buf2_alloc); - } - - // create the buffer to send - size_t memaddr_len = 0; - for (int16_t i = addrsize - 8; i >= 0; i -= 8) { - buf2[memaddr_len++] = memaddr >> i; - } - memcpy(buf2 + memaddr_len, buf, len); - - int ret = i2c_p->writeto(self, addr, buf2, memaddr_len + len, true); - if (buf2_alloc != 0) { - m_del(uint8_t, buf2, buf2_alloc); - } - return ret; -} - -STATIC const mp_arg_t machine_i2c_mem_allowed_args[] = { - { MP_QSTR_addr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} }, - { MP_QSTR_memaddr, MP_ARG_REQUIRED | MP_ARG_INT, {.u_int = 0} }, - { MP_QSTR_arg, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - { MP_QSTR_addrsize, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} }, -}; - -STATIC mp_obj_t machine_i2c_readfrom_mem(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { - enum { ARG_addr, ARG_memaddr, ARG_n, ARG_addrsize }; - mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)]; - mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, - MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args); - - // create the buffer to store data into - vstr_t vstr; - vstr_init_len(&vstr, mp_obj_get_int(args[ARG_n].u_obj)); - - // do the transfer - int ret = read_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int, - args[ARG_addrsize].u_int, (uint8_t*)vstr.buf, vstr.len); - if (ret < 0) { - mp_raise_OSError(-ret); - } - - return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr); -} -MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_readfrom_mem_obj, 1, machine_i2c_readfrom_mem); - - -STATIC mp_obj_t machine_i2c_readfrom_mem_into(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { - enum { ARG_addr, ARG_memaddr, ARG_buf, ARG_addrsize }; - mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)]; - mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, - MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args); - - // get the buffer to store data into - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[ARG_buf].u_obj, &bufinfo, MP_BUFFER_WRITE); - - // do the transfer - int ret = read_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int, - args[ARG_addrsize].u_int, bufinfo.buf, bufinfo.len); - if (ret < 0) { - mp_raise_OSError(-ret); - } - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_readfrom_mem_into_obj, 1, machine_i2c_readfrom_mem_into); - -STATIC mp_obj_t machine_i2c_writeto_mem(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { - enum { ARG_addr, ARG_memaddr, ARG_buf, ARG_addrsize }; - mp_arg_val_t args[MP_ARRAY_SIZE(machine_i2c_mem_allowed_args)]; - mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, - MP_ARRAY_SIZE(machine_i2c_mem_allowed_args), machine_i2c_mem_allowed_args, args); - - // get the buffer to write the data from - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[ARG_buf].u_obj, &bufinfo, MP_BUFFER_READ); - - // do the transfer - int ret = write_mem(pos_args[0], args[ARG_addr].u_int, args[ARG_memaddr].u_int, - args[ARG_addrsize].u_int, bufinfo.buf, bufinfo.len); - if (ret < 0) { - mp_raise_OSError(-ret); - } - - return mp_const_none; -} -STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2c_writeto_mem_obj, 1, machine_i2c_writeto_mem); - -STATIC const mp_rom_map_elem_t machine_i2c_locals_dict_table[] = { - { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_i2c_init_obj) }, - { MP_ROM_QSTR(MP_QSTR_scan), MP_ROM_PTR(&machine_i2c_scan_obj) }, - - // primitive I2C operations - { MP_ROM_QSTR(MP_QSTR_start), MP_ROM_PTR(&machine_i2c_start_obj) }, - { MP_ROM_QSTR(MP_QSTR_stop), MP_ROM_PTR(&machine_i2c_stop_obj) }, - { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&machine_i2c_readinto_obj) }, - { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&machine_i2c_write_obj) }, - - // standard bus operations - { MP_ROM_QSTR(MP_QSTR_readfrom), MP_ROM_PTR(&machine_i2c_readfrom_obj) }, - { MP_ROM_QSTR(MP_QSTR_readfrom_into), MP_ROM_PTR(&machine_i2c_readfrom_into_obj) }, - { MP_ROM_QSTR(MP_QSTR_writeto), MP_ROM_PTR(&machine_i2c_writeto_obj) }, - - // memory operations - { MP_ROM_QSTR(MP_QSTR_readfrom_mem), MP_ROM_PTR(&machine_i2c_readfrom_mem_obj) }, - { MP_ROM_QSTR(MP_QSTR_readfrom_mem_into), MP_ROM_PTR(&machine_i2c_readfrom_mem_into_obj) }, - { MP_ROM_QSTR(MP_QSTR_writeto_mem), MP_ROM_PTR(&machine_i2c_writeto_mem_obj) }, -}; - -MP_DEFINE_CONST_DICT(mp_machine_soft_i2c_locals_dict, machine_i2c_locals_dict_table); - -int mp_machine_soft_i2c_read(mp_obj_base_t *self_in, uint8_t *dest, size_t len, bool nack) { - machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in; - while (len--) { - int ret = mp_hal_i2c_read_byte(self, dest++, nack && (len == 0)); - if (ret != 0) { - return ret; - } - } - return 0; // success -} - -int mp_machine_soft_i2c_write(mp_obj_base_t *self_in, const uint8_t *src, size_t len) { - machine_i2c_obj_t *self = (machine_i2c_obj_t*)self_in; - int num_acks = 0; - while (len--) { - int ret = mp_hal_i2c_write_byte(self, *src++); - if (ret < 0) { - return ret; - } else if (ret != 0) { - // nack received, stop sending - break; - } - ++num_acks; - } - return num_acks; -} - -STATIC const mp_machine_i2c_p_t mp_machine_soft_i2c_p = { - MP_PROTO_IMPLEMENT(MP_QSTR_protocol_i2c) - .start = (int(*)(mp_obj_base_t*))mp_hal_i2c_start, - .stop = (int(*)(mp_obj_base_t*))mp_hal_i2c_stop, - .read = mp_machine_soft_i2c_read, - .write = mp_machine_soft_i2c_write, - .readfrom = mp_machine_soft_i2c_readfrom, - .writeto = mp_machine_soft_i2c_writeto, -}; - -const mp_obj_type_t machine_i2c_type = { - { &mp_type_type }, - .name = MP_QSTR_I2C, - .make_new = machine_i2c_make_new, - .protocol = &mp_machine_soft_i2c_p, - .locals_dict = (mp_obj_dict_t*)&mp_machine_soft_i2c_locals_dict, -}; - -#endif // MICROPY_PY_MACHINE_I2C diff --git a/extmod/machine_i2c.h b/extmod/machine_i2c.h deleted file mode 100644 index 7f5ee568e..000000000 --- a/extmod/machine_i2c.h +++ /dev/null @@ -1,58 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2016 Damien P. George - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#ifndef MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H -#define MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H - -#include "py/obj.h" -#include "py/proto.h" - -// I2C protocol -// the first 4 methods can be NULL, meaning operation is not supported -typedef struct _mp_machine_i2c_p_t { - MP_PROTOCOL_HEAD - int (*start)(mp_obj_base_t *obj); - int (*stop)(mp_obj_base_t *obj); - int (*read)(mp_obj_base_t *obj, uint8_t *dest, size_t len, bool nack); - int (*write)(mp_obj_base_t *obj, const uint8_t *src, size_t len); - int (*readfrom)(mp_obj_base_t *obj, uint16_t addr, uint8_t *dest, size_t len, bool stop); - int (*writeto)(mp_obj_base_t *obj, uint16_t addr, const uint8_t *src, size_t len, bool stop); -} mp_machine_i2c_p_t; - -typedef struct _mp_machine_soft_i2c_obj_t { - mp_obj_base_t base; - uint32_t us_delay; - uint32_t us_timeout; - mp_hal_pin_obj_t scl; - mp_hal_pin_obj_t sda; -} mp_machine_soft_i2c_obj_t; - -extern const mp_obj_type_t machine_i2c_type; -extern const mp_obj_dict_t mp_machine_soft_i2c_locals_dict; - -int mp_machine_soft_i2c_readfrom(mp_obj_base_t *self_in, uint16_t addr, uint8_t *dest, size_t len, bool stop); -int mp_machine_soft_i2c_writeto(mp_obj_base_t *self_in, uint16_t addr, const uint8_t *src, size_t len, bool stop); - -#endif // MICROPY_INCLUDED_EXTMOD_MACHINE_I2C_H diff --git a/extmod/machine_spi.c b/extmod/machine_spi.c deleted file mode 100644 index 4ead321d9..000000000 --- a/extmod/machine_spi.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2016 Damien P. George - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include <stdio.h> -#include <string.h> - -#include "py/runtime.h" -#include "extmod/machine_spi.h" - -#include "supervisor/shared/translate.h" - -#if MICROPY_PY_MACHINE_SPI - -// if a port didn't define MSB/LSB constants then provide them -#ifndef MICROPY_PY_MACHINE_SPI_MSB -#define MICROPY_PY_MACHINE_SPI_MSB (0) -#define MICROPY_PY_MACHINE_SPI_LSB (1) -#endif - -/******************************************************************************/ -// MicroPython bindings for generic machine.SPI - -STATIC mp_obj_t mp_machine_soft_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args); - -mp_obj_t mp_machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { - // check the id argument, if given - if (n_args > 0) { - if (args[0] != MP_OBJ_NEW_SMALL_INT(-1)) { - #if defined(MICROPY_PY_MACHINE_SPI_MAKE_NEW) - // dispatch to port-specific constructor - extern mp_obj_t MICROPY_PY_MACHINE_SPI_MAKE_NEW(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args); - return MICROPY_PY_MACHINE_SPI_MAKE_NEW(type, n_args, args, kw_args); - #else - mp_raise_ValueError(translate("invalid SPI peripheral")); - #endif - } - --n_args; - ++args; - } - - // software SPI - return mp_machine_soft_spi_make_new(type, n_args, args, kw_args); -} - -STATIC mp_obj_t machine_spi_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { - mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(args[0]); - mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s); - spi_p->init(s, n_args - 1, args + 1, kw_args); - return mp_const_none; -} -STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_spi_init_obj, 1, machine_spi_init); - -STATIC mp_obj_t machine_spi_deinit(mp_obj_t self) { - mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(self); - mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s); - if (spi_p->deinit != NULL) { - spi_p->deinit(s); - } - return mp_const_none; -} -STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_spi_deinit_obj, machine_spi_deinit); - -STATIC void mp_machine_spi_transfer(mp_obj_t self, size_t len, const void *src, void *dest) { - mp_obj_base_t *s = (mp_obj_base_t*)MP_OBJ_TO_PTR(self); - mp_machine_spi_p_t *spi_p = (mp_machine_spi_p_t*)mp_proto_get(QSTR_protocol_spi, s); - spi_p->transfer(s, len, src, dest); -} - -STATIC mp_obj_t mp_machine_spi_read(size_t n_args, const mp_obj_t *args) { - vstr_t vstr; - vstr_init_len(&vstr, mp_obj_get_int(args[1])); - memset(vstr.buf, n_args == 3 ? mp_obj_get_int(args[2]) : 0, vstr.len); - mp_machine_spi_transfer(args[0], vstr.len, vstr.buf, vstr.buf); - return mp_obj_new_str_from_vstr(&mp_type_bytes, &vstr); -} -MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_read_obj, 2, 3, mp_machine_spi_read); - -STATIC mp_obj_t mp_machine_spi_readinto(size_t n_args, const mp_obj_t *args) { - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[1], &bufinfo, MP_BUFFER_WRITE); - memset(bufinfo.buf, n_args == 3 ? mp_obj_get_int(args[2]) : 0, bufinfo.len); - mp_machine_spi_transfer(args[0], bufinfo.len, bufinfo.buf, bufinfo.buf); - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_readinto_obj, 2, 3, mp_machine_spi_readinto); - -STATIC mp_obj_t mp_machine_spi_write(mp_obj_t self, mp_obj_t wr_buf) { - mp_buffer_info_t src; - mp_get_buffer_raise(wr_buf, &src, MP_BUFFER_READ); - mp_machine_spi_transfer(self, src.len, (const uint8_t*)src.buf, NULL); - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_2(mp_machine_spi_write_obj, mp_machine_spi_write); - -STATIC mp_obj_t mp_machine_spi_write_readinto(mp_obj_t self, mp_obj_t wr_buf, mp_obj_t rd_buf) { - mp_buffer_info_t src; - mp_get_buffer_raise(wr_buf, &src, MP_BUFFER_READ); - mp_buffer_info_t dest; - mp_get_buffer_raise(rd_buf, &dest, MP_BUFFER_WRITE); - if (src.len != dest.len) { - mp_raise_ValueError(translate("buffers must be the same length")); - } - mp_machine_spi_transfer(self, src.len, src.buf, dest.buf); - return mp_const_none; -} -MP_DEFINE_CONST_FUN_OBJ_3(mp_machine_spi_write_readinto_obj, mp_machine_spi_write_readinto); - -STATIC const mp_rom_map_elem_t machine_spi_locals_dict_table[] = { - { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_spi_init_obj) }, - { MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_spi_deinit_obj) }, - { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_machine_spi_read_obj) }, - { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_machine_spi_readinto_obj) }, - { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_machine_spi_write_obj) }, - { MP_ROM_QSTR(MP_QSTR_write_readinto), MP_ROM_PTR(&mp_machine_spi_write_readinto_obj) }, - - { MP_ROM_QSTR(MP_QSTR_MSB), MP_ROM_INT(MICROPY_PY_MACHINE_SPI_MSB) }, - { MP_ROM_QSTR(MP_QSTR_LSB), MP_ROM_INT(MICROPY_PY_MACHINE_SPI_LSB) }, -}; - -MP_DEFINE_CONST_DICT(mp_machine_spi_locals_dict, machine_spi_locals_dict_table); - -/******************************************************************************/ -// Implementation of soft SPI - -STATIC uint32_t baudrate_from_delay_half(uint32_t delay_half) { - #ifdef MICROPY_HW_SOFTSPI_MIN_DELAY - if (delay_half == MICROPY_HW_SOFTSPI_MIN_DELAY) { - return MICROPY_HW_SOFTSPI_MAX_BAUDRATE; - } else - #endif - { - return 500000 / delay_half; - } -} - -STATIC uint32_t baudrate_to_delay_half(uint32_t baudrate) { - #ifdef MICROPY_HW_SOFTSPI_MIN_DELAY - if (baudrate >= MICROPY_HW_SOFTSPI_MAX_BAUDRATE) { - return MICROPY_HW_SOFTSPI_MIN_DELAY; - } else - #endif - { - uint32_t delay_half = 500000 / baudrate; - // round delay_half up so that: actual_baudrate <= requested_baudrate - if (500000 % baudrate != 0) { - delay_half += 1; - } - return delay_half; - } -} - -STATIC void mp_machine_soft_spi_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { - mp_machine_soft_spi_obj_t *self = MP_OBJ_TO_PTR(self_in); - mp_printf(print, "SoftSPI(baudrate=%u, polarity=%u, phase=%u," - " sck=" MP_HAL_PIN_FMT ", mosi=" MP_HAL_PIN_FMT ", miso=" MP_HAL_PIN_FMT ")", - baudrate_from_delay_half(self->spi.delay_half), self->spi.polarity, self->spi.phase, - mp_hal_pin_name(self->spi.sck), mp_hal_pin_name(self->spi.mosi), mp_hal_pin_name(self->spi.miso)); -} - -STATIC mp_obj_t mp_machine_soft_spi_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *all_args, mp_map_t *kw_args) { - enum { ARG_baudrate, ARG_polarity, ARG_phase, ARG_bits, ARG_firstbit, ARG_sck, ARG_mosi, ARG_miso }; - static const mp_arg_t allowed_args[] = { - { MP_QSTR_baudrate, MP_ARG_INT, {.u_int = 500000} }, - { MP_QSTR_polarity, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} }, - { MP_QSTR_phase, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} }, - { MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 8} }, - { MP_QSTR_firstbit, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = MICROPY_PY_MACHINE_SPI_MSB} }, - { MP_QSTR_sck, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - { MP_QSTR_mosi, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - { MP_QSTR_miso, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - }; - mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; - mp_arg_parse_all(n_args, all_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); - - // create new object - mp_machine_soft_spi_obj_t *self = m_new_obj(mp_machine_soft_spi_obj_t); - self->base.type = &mp_machine_soft_spi_type; - - // set parameters - self->spi.delay_half = baudrate_to_delay_half(args[ARG_baudrate].u_int); - self->spi.polarity = args[ARG_polarity].u_int; - self->spi.phase = args[ARG_phase].u_int; - if (args[ARG_bits].u_int != 8) { - mp_raise_ValueError(translate("bits must be 8")); - } - if (args[ARG_firstbit].u_int != MICROPY_PY_MACHINE_SPI_MSB) { - mp_raise_ValueError(translate("firstbit must be MSB")); - } - if (args[ARG_sck].u_obj == MP_OBJ_NULL - || args[ARG_mosi].u_obj == MP_OBJ_NULL - || args[ARG_miso].u_obj == MP_OBJ_NULL) { - mp_raise_ValueError(translate("must specify all of sck/mosi/miso")); - } - self->spi.sck = mp_hal_get_pin_obj(args[ARG_sck].u_obj); - self->spi.mosi = mp_hal_get_pin_obj(args[ARG_mosi].u_obj); - self->spi.miso = mp_hal_get_pin_obj(args[ARG_miso].u_obj); - - // configure bus - mp_soft_spi_ioctl(&self->spi, MP_SPI_IOCTL_INIT); - - return MP_OBJ_FROM_PTR(self); -} - -STATIC void mp_machine_soft_spi_init(mp_obj_base_t *self_in, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { - mp_machine_soft_spi_obj_t *self = (mp_machine_soft_spi_obj_t*)self_in; - - enum { ARG_baudrate, ARG_polarity, ARG_phase, ARG_sck, ARG_mosi, ARG_miso }; - static const mp_arg_t allowed_args[] = { - { MP_QSTR_baudrate, MP_ARG_INT, {.u_int = -1} }, - { MP_QSTR_polarity, MP_ARG_INT, {.u_int = -1} }, - { MP_QSTR_phase, MP_ARG_INT, {.u_int = -1} }, - { MP_QSTR_sck, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - { MP_QSTR_mosi, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - { MP_QSTR_miso, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} }, - }; - mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; - mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); - - if (args[ARG_baudrate].u_int != -1) { - self->spi.delay_half = baudrate_to_delay_half(args[ARG_baudrate].u_int); - } - if (args[ARG_polarity].u_int != -1) { - self->spi.polarity = args[ARG_polarity].u_int; - } - if (args[ARG_phase].u_int != -1) { - self->spi.phase = args[ARG_phase].u_int; - } - if (args[ARG_sck].u_obj != MP_OBJ_NULL) { - self->spi.sck = mp_hal_get_pin_obj(args[ARG_sck].u_obj); - } - if (args[ARG_mosi].u_obj != MP_OBJ_NULL) { - self->spi.mosi = mp_hal_get_pin_obj(args[ARG_mosi].u_obj); - } - if (args[ARG_miso].u_obj != MP_OBJ_NULL) { - self->spi.miso = mp_hal_get_pin_obj(args[ARG_miso].u_obj); - } - - // configure bus - mp_soft_spi_ioctl(&self->spi, MP_SPI_IOCTL_INIT); -} - -STATIC void mp_machine_soft_spi_transfer(mp_obj_base_t *self_in, size_t len, const uint8_t *src, uint8_t *dest) { - mp_machine_soft_spi_obj_t *self = (mp_machine_soft_spi_obj_t*)self_in; - mp_soft_spi_transfer(&self->spi, len, src, dest); -} - -const mp_machine_spi_p_t mp_machine_soft_spi_p = { - MP_PROTO_IMPLEMENT(MP_QSTR_protocol_spi) - .init = mp_machine_soft_spi_init, - .deinit = NULL, - .transfer = mp_machine_soft_spi_transfer, -}; - -const mp_obj_type_t mp_machine_soft_spi_type = { - { &mp_type_type }, - .name = MP_QSTR_SoftSPI, - .print = mp_machine_soft_spi_print, - .make_new = mp_machine_spi_make_new, // delegate to master constructor - .protocol = &mp_machine_soft_spi_p, - .locals_dict = (mp_obj_dict_t*)&mp_machine_spi_locals_dict, -}; - -#endif // MICROPY_PY_MACHINE_SPI diff --git a/extmod/machine_spi.h b/extmod/machine_spi.h deleted file mode 100644 index 365b44d6e..000000000 --- a/extmod/machine_spi.h +++ /dev/null @@ -1,58 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2016 Damien P. George - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#ifndef MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H -#define MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H - -#include "py/obj.h" -#include "py/proto.h" -#include "py/mphal.h" -#include "drivers/bus/spi.h" - -// SPI protocol -typedef struct _mp_machine_spi_p_t { - MP_PROTOCOL_HEAD - void (*init)(mp_obj_base_t *obj, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args); - void (*deinit)(mp_obj_base_t *obj); // can be NULL - void (*transfer)(mp_obj_base_t *obj, size_t len, const uint8_t *src, uint8_t *dest); -} mp_machine_spi_p_t; - -typedef struct _mp_machine_soft_spi_obj_t { - mp_obj_base_t base; - mp_soft_spi_obj_t spi; -} mp_machine_soft_spi_obj_t; - -extern const mp_machine_spi_p_t mp_machine_soft_spi_p; -extern const mp_obj_type_t mp_machine_soft_spi_type; -extern const mp_obj_dict_t mp_machine_spi_locals_dict; - -mp_obj_t mp_machine_spi_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args); - -MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_read_obj); -MP_DECLARE_CONST_FUN_OBJ_VAR_BETWEEN(mp_machine_spi_readinto_obj); -MP_DECLARE_CONST_FUN_OBJ_2(mp_machine_spi_write_obj); -MP_DECLARE_CONST_FUN_OBJ_3(mp_machine_spi_write_readinto_obj); - -#endif // MICROPY_INCLUDED_EXTMOD_MACHINE_SPI_H |