131 lines
4.2 KiB
C
131 lines
4.2 KiB
C
/*
|
|
* This file is part of the Micro Python project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2022 microDev
|
|
*
|
|
* 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 "bindings/espulp/__init__.h"
|
|
#include "bindings/espulp/ULP.h"
|
|
|
|
#include "py/runtime.h"
|
|
|
|
#include "shared-bindings/microcontroller/Pin.h"
|
|
|
|
#if defined(CONFIG_IDF_TARGET_ESP32S2)
|
|
#include "esp32s2/ulp.h"
|
|
#include "esp32s2/ulp_riscv.h"
|
|
#define ULP_COPROC_RESERVE_MEM (CONFIG_ESP32S2_ULP_COPROC_RESERVE_MEM)
|
|
#elif defined(CONFIG_IDF_TARGET_ESP32S3)
|
|
#include "esp32s3/ulp.h"
|
|
#include "esp32s3/ulp_riscv.h"
|
|
#define ULP_COPROC_RESERVE_MEM (CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM)
|
|
#endif
|
|
|
|
// To-do idf v5.0: remove following include
|
|
#include "soc/rtc_cntl_reg.h"
|
|
|
|
STATIC bool ulp_used = false;
|
|
STATIC uint32_t pins_used = 0;
|
|
|
|
void espulp_reset(void) {
|
|
// NOTE: This *doesn't* disable the ULP. It'll keep running even when CircuitPython isn't.
|
|
ulp_used = false;
|
|
}
|
|
|
|
void common_hal_espulp_ulp_run(espulp_ulp_obj_t *self, uint32_t *program, size_t length, uint32_t pin_mask) {
|
|
if (length > ULP_COPROC_RESERVE_MEM) {
|
|
mp_raise_ValueError(translate("Program too long"));
|
|
}
|
|
if (GET_PERI_REG_MASK(RTC_CNTL_ULP_CP_TIMER_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN)) {
|
|
mp_raise_RuntimeError(translate("Already running"));
|
|
}
|
|
|
|
if (pin_mask >= (1 << 22)) {
|
|
raise_ValueError_invalid_pin();
|
|
}
|
|
|
|
for (uint8_t i = 0; i < 32; i++) {
|
|
if ((pin_mask & (1 << i)) != 0 && !pin_number_is_free(i)) {
|
|
mp_raise_ValueError_varg(translate("%q in use"), MP_QSTR_Pin);
|
|
}
|
|
}
|
|
|
|
for (uint8_t i = 0; i < 32; i++) {
|
|
if ((pin_mask & (1 << i)) != 0) {
|
|
claim_pin_number(i);
|
|
never_reset_pin_number(i);
|
|
}
|
|
}
|
|
pins_used = pin_mask;
|
|
|
|
|
|
ulp_riscv_load_binary((const uint8_t *)program, length);
|
|
ulp_set_wakeup_period(0, 20000);
|
|
ulp_riscv_run();
|
|
}
|
|
|
|
void common_hal_espulp_ulp_halt(espulp_ulp_obj_t *self) {
|
|
// To-do idf v5.0: use following functions
|
|
// ulp_riscv_timer_stop();
|
|
// ulp_riscv_halt();
|
|
|
|
// stop the ulp timer so that it doesn't restart the cpu
|
|
CLEAR_PERI_REG_MASK(RTC_CNTL_ULP_CP_TIMER_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN);
|
|
|
|
// suspends the ulp operation
|
|
SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_DONE);
|
|
|
|
// resets the processor
|
|
SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_SHUT_RESET_EN);
|
|
|
|
// Release pins we were using.
|
|
for (uint8_t i = 0; i < 32; i++) {
|
|
if ((pins_used & (1 << i)) != 0) {
|
|
reset_pin_number(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void common_hal_espulp_ulp_construct(espulp_ulp_obj_t *self) {
|
|
// Use a static variable to track ULP in use so that subsequent code runs can
|
|
// use a running ULP. This is only to prevent multiple portions of user code
|
|
// from using the ULP concurrently.
|
|
if (ulp_used) {
|
|
mp_raise_ValueError_varg(translate("%q in use"), MP_QSTR_ULP);
|
|
}
|
|
self->inited = true;
|
|
}
|
|
|
|
bool common_hal_espulp_ulp_deinited(espulp_ulp_obj_t *self) {
|
|
return !self->inited;
|
|
}
|
|
|
|
void common_hal_espulp_ulp_deinit(espulp_ulp_obj_t *self) {
|
|
if (common_hal_espulp_ulp_deinited(self)) {
|
|
return;
|
|
}
|
|
common_hal_espulp_ulp_halt(self);
|
|
self->inited = false;
|
|
ulp_used = false;
|
|
}
|