From 733094aead6e84b42da54655b2b0a5d0dbd1a503 Mon Sep 17 00:00:00 2001 From: Scott Shawcroft Date: Wed, 20 Jan 2021 16:47:18 -0800 Subject: Add initial RP2040 support The RP2040 is new microcontroller from Raspberry Pi that features two Cortex M0s and eight PIO state machines that are good for crunching lots of data. It has 264k RAM and a built in UF2 bootloader too. Datasheet: https://pico.raspberrypi.org/files/rp2040_datasheet.pdf --- .../common-hal/microcontroller/Processor.c | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 ports/raspberrypi/common-hal/microcontroller/Processor.c (limited to 'ports/raspberrypi/common-hal/microcontroller/Processor.c') diff --git a/ports/raspberrypi/common-hal/microcontroller/Processor.c b/ports/raspberrypi/common-hal/microcontroller/Processor.c new file mode 100644 index 000000000..0ad3a51e2 --- /dev/null +++ b/ports/raspberrypi/common-hal/microcontroller/Processor.c @@ -0,0 +1,66 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2021 Scott Shawcroft for Adafruit Industries + * + * 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 + +#include "py/mphal.h" +#include "common-hal/microcontroller/Processor.h" +#include "shared-bindings/microcontroller/ResetReason.h" + +#include "src/rp2_common/hardware_adc/include/hardware/adc.h" +#include "src/rp2_common/hardware_clocks/include/hardware/clocks.h" + +float common_hal_mcu_processor_get_temperature(void) { + adc_init(); + adc_set_temp_sensor_enabled(true); + adc_select_input(4); + uint16_t value = adc_read(); + adc_set_temp_sensor_enabled(false); + float voltage = value * 3.3 / (1 << 12); + // TODO: turn the ADC back off + return 27 - (voltage - 0.706) / 0.001721; +} + +float common_hal_mcu_processor_get_voltage(void) { + return 3.3f; +} + +uint32_t common_hal_mcu_processor_get_frequency(void) { + return clock_get_hz(clk_sys); +} + +void common_hal_mcu_processor_get_uid(uint8_t raw_id[]) { + // TODO: get the unique id from the flash. The chip itself doesn't have one. + // for (int i=0; i<4; i++) { + // for (int k=0; k<4; k++) { + // raw_id[4 * i + k] = (*(id_addresses[i]) >> k * 8) & 0xff; + // } + // } +} + +mcu_reset_reason_t common_hal_mcu_processor_get_reset_reason(void) { + return RESET_REASON_UNKNOWN; +} -- cgit v1.2.3