From a5f6cb3c57fa088afa20d2892105fb068cd11645 Mon Sep 17 00:00:00 2001 From: Scott Shawcroft Date: Fri, 19 Aug 2016 20:24:04 -0700 Subject: Compiled and linked SAMD21x18 version successfully. --- atmel-samd/main.c | 167 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 atmel-samd/main.c (limited to 'atmel-samd/main.c') diff --git a/atmel-samd/main.c b/atmel-samd/main.c new file mode 100644 index 000000000..1033a44c1 --- /dev/null +++ b/atmel-samd/main.c @@ -0,0 +1,167 @@ +#include +#include +#include + +#include "py/nlr.h" +#include "py/compile.h" +#include "py/runtime.h" +#include "py/repl.h" +#include "py/gc.h" +#include "lib/utils/pyexec.h" + +void do_str(const char *src, mp_parse_input_kind_t input_kind) { + mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0); + if (lex == NULL) { + printf("MemoryError: lexer could not allocate memory\n"); + return; + } + + nlr_buf_t nlr; + if (nlr_push(&nlr) == 0) { + qstr source_name = lex->source_name; + mp_parse_tree_t parse_tree = mp_parse(lex, input_kind); + mp_obj_t module_fun = mp_compile(&parse_tree, source_name, MP_EMIT_OPT_NONE, true); + mp_call_function_0(module_fun); + nlr_pop(); + } else { + // uncaught exception + mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val); + } +} + +static char *stack_top; +static char heap[2048]; + +int main(int argc, char **argv) { + int stack_dummy; + stack_top = (char*)&stack_dummy; + + #if MICROPY_ENABLE_GC + gc_init(heap, heap + sizeof(heap)); + #endif + mp_init(); + #if MICROPY_REPL_EVENT_DRIVEN + pyexec_event_repl_init(); + for (;;) { + int c = mp_hal_stdin_rx_chr(); + if (pyexec_event_repl_process_char(c)) { + break; + } + } + #else + pyexec_friendly_repl(); + #endif + //do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\\n')", MP_PARSE_SINGLE_INPUT); + //do_str("for i in range(10):\r\n print(i)", MP_PARSE_FILE_INPUT); + mp_deinit(); + return 0; +} + +void gc_collect(void) { + // WARNING: This gc_collect implementation doesn't try to get root + // pointers from CPU registers, and thus may function incorrectly. + void *dummy; + gc_collect_start(); + gc_collect_root(&dummy, ((mp_uint_t)stack_top - (mp_uint_t)&dummy) / sizeof(mp_uint_t)); + gc_collect_end(); + gc_dump_info(); +} + +mp_lexer_t *mp_lexer_new_from_file(const char *filename) { + return NULL; +} + +mp_import_stat_t mp_import_stat(const char *path) { + return MP_IMPORT_STAT_NO_EXIST; +} + +mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) { + return mp_const_none; +} +MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open); + +void nlr_jump_fail(void *val) { +} + +void NORETURN __fatal_error(const char *msg) { + while (1); +} + +#ifndef NDEBUG +void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) { + printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line); + __fatal_error("Assertion failed"); +} +#endif + +#if MICROPY_MIN_USE_CORTEX_CPU + +// this is a minimal IRQ and reset framework for any Cortex-M CPU + +extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss; + +void Reset_Handler(void) __attribute__((naked)); +void Reset_Handler(void) { + // stack pointer set by bootloader + // copy .data section from flash to RAM + for (uint32_t *src = &_sidata, *dest = &_sdata; dest < &_edata;) { + *dest++ = *src++; + } + // zero out .bss section + for (uint32_t *dest = &_sbss; dest < &_ebss;) { + *dest++ = 0; + } + // jump to board initialisation + void _start(void); + _start(); +} + +void Default_Handler(void) { + for (;;) { + } +} + +uint32_t isr_vector[] __attribute__((section(".isr_vector"))) = { + (uint32_t)&_estack, + (uint32_t)&Reset_Handler, + (uint32_t)&Default_Handler, // NMI_Handler + (uint32_t)&Default_Handler, // HardFault_Handler + (uint32_t)&Default_Handler, // MemManage_Handler + (uint32_t)&Default_Handler, // BusFault_Handler + (uint32_t)&Default_Handler, // UsageFault_Handler + 0, + 0, + 0, + 0, + (uint32_t)&Default_Handler, // SVC_Handler + (uint32_t)&Default_Handler, // DebugMon_Handler + 0, + (uint32_t)&Default_Handler, // PendSV_Handler + (uint32_t)&Default_Handler, // SysTick_Handler +}; + +void _start(void) { + // when we get here: stack is initialised, bss is clear, data is copied + + // initialise the cpu and peripherals + #if MICROPY_MIN_USE_SAMD21_MCU + void samd21_init(void); + samd21_init(); + #endif + + // now that we have a basic system up and running we can call main + main(0, NULL); + + // we must not return + for (;;) { + } +} + +#endif + +#if MICROPY_MIN_USE_SAMD21_MCU + +void samd21_init(void) { +} + +#endif -- cgit v1.2.3