kopia lustrzana https://github.com/micropython/micropython
esp32/machine_adcblock: Add new machine.ADCBlock class and update ADC.
Rework the ADC implementation to follow the improved ADC/ADCBlock API. This adds support for calibrated voltage readings and the ADC2 block. The ADC API is backwards compatible with what it was before this change. Resolves #6219.pull/8199/head
Jonathan Hogg
Damien George
rodzic
3300d6d337
commit
63438a31bb
|
|
@ -58,3 +58,8 @@ CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
|
|||
# To reduce iRAM usage
|
||||
CONFIG_ESP32_WIFI_IRAM_OPT=n
|
||||
CONFIG_ESP32_WIFI_RX_IRAM_OPT=n
|
||||
|
||||
# ADC calibration
|
||||
CONFIG_ADC_CAL_EFUSE_TP_ENABLE=y
|
||||
CONFIG_ADC_CAL_EFUSE_VREF_ENABLE=y
|
||||
CONFIG_ADC_CAL_LUT_ENABLE=y
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@
|
|||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2017 Nick Moore
|
||||
* Copyright (c) 2021 Jonathan Hogg
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
|
|
@ -24,7 +25,6 @@
|
|||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
|
||||
#include <stdio.h>
|
||||
|
||||
#include "esp_log.h"
|
||||
|
|
@ -35,176 +35,213 @@
|
|||
#include "py/runtime.h"
|
||||
#include "py/mphal.h"
|
||||
#include "modmachine.h"
|
||||
#include "machine_adc.h"
|
||||
|
||||
typedef struct _madc_obj_t {
|
||||
mp_obj_base_t base;
|
||||
gpio_num_t gpio_id;
|
||||
adc1_channel_t adc1_id;
|
||||
} madc_obj_t;
|
||||
#define ADCBLOCK1 (&madcblock_obj[0])
|
||||
#define ADCBLOCK2 (&madcblock_obj[1])
|
||||
|
||||
STATIC const madc_obj_t madc_obj[] = {
|
||||
#if CONFIG_IDF_TARGET_ESP32
|
||||
{{&machine_adc_type}, GPIO_NUM_36, ADC1_CHANNEL_0},
|
||||
{{&machine_adc_type}, GPIO_NUM_37, ADC1_CHANNEL_1},
|
||||
{{&machine_adc_type}, GPIO_NUM_38, ADC1_CHANNEL_2},
|
||||
{{&machine_adc_type}, GPIO_NUM_39, ADC1_CHANNEL_3},
|
||||
{{&machine_adc_type}, GPIO_NUM_32, ADC1_CHANNEL_4},
|
||||
{{&machine_adc_type}, GPIO_NUM_33, ADC1_CHANNEL_5},
|
||||
{{&machine_adc_type}, GPIO_NUM_34, ADC1_CHANNEL_6},
|
||||
{{&machine_adc_type}, GPIO_NUM_35, ADC1_CHANNEL_7},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_0, GPIO_NUM_36},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_1, GPIO_NUM_37},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_2, GPIO_NUM_38},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_3, GPIO_NUM_39},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_4, GPIO_NUM_32},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_5, GPIO_NUM_33},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_6, GPIO_NUM_34},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_7, GPIO_NUM_35},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_0, GPIO_NUM_0},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_1, GPIO_NUM_2},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_2, GPIO_NUM_4},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_3, GPIO_NUM_12},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_4, GPIO_NUM_13},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_5, GPIO_NUM_14},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_6, GPIO_NUM_15},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_7, GPIO_NUM_25},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_8, GPIO_NUM_26},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_9, GPIO_NUM_27},
|
||||
#elif CONFIG_IDF_TARGET_ESP32C3
|
||||
{{&machine_adc_type}, GPIO_NUM_0, ADC1_CHANNEL_0},
|
||||
{{&machine_adc_type}, GPIO_NUM_1, ADC1_CHANNEL_1},
|
||||
{{&machine_adc_type}, GPIO_NUM_2, ADC1_CHANNEL_2},
|
||||
{{&machine_adc_type}, GPIO_NUM_3, ADC1_CHANNEL_3},
|
||||
{{&machine_adc_type}, GPIO_NUM_4, ADC1_CHANNEL_4},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_0, GPIO_NUM_0},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_1, GPIO_NUM_1},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_2, GPIO_NUM_2},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_3, GPIO_NUM_3},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_4, GPIO_NUM_4},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_0, GPIO_NUM_5},
|
||||
#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
||||
{{&machine_adc_type}, GPIO_NUM_1, ADC1_CHANNEL_0},
|
||||
{{&machine_adc_type}, GPIO_NUM_2, ADC1_CHANNEL_1},
|
||||
{{&machine_adc_type}, GPIO_NUM_3, ADC1_CHANNEL_2},
|
||||
{{&machine_adc_type}, GPIO_NUM_4, ADC1_CHANNEL_3},
|
||||
{{&machine_adc_type}, GPIO_NUM_5, ADC1_CHANNEL_4},
|
||||
{{&machine_adc_type}, GPIO_NUM_6, ADC1_CHANNEL_5},
|
||||
{{&machine_adc_type}, GPIO_NUM_7, ADC1_CHANNEL_6},
|
||||
{{&machine_adc_type}, GPIO_NUM_8, ADC1_CHANNEL_7},
|
||||
{{&machine_adc_type}, GPIO_NUM_9, ADC1_CHANNEL_8},
|
||||
{{&machine_adc_type}, GPIO_NUM_10, ADC1_CHANNEL_9},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_0, GPIO_NUM_1},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_1, GPIO_NUM_2},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_2, GPIO_NUM_3},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_3, GPIO_NUM_4},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_4, GPIO_NUM_5},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_5, GPIO_NUM_6},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_6, GPIO_NUM_7},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_7, GPIO_NUM_8},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_8, GPIO_NUM_9},
|
||||
{{&machine_adc_type}, ADCBLOCK1, ADC_CHANNEL_9, GPIO_NUM_10},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_0, GPIO_NUM_11},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_1, GPIO_NUM_12},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_2, GPIO_NUM_13},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_3, GPIO_NUM_14},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_4, GPIO_NUM_15},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_5, GPIO_NUM_16},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_6, GPIO_NUM_17},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_7, GPIO_NUM_18},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_8, GPIO_NUM_19},
|
||||
{{&machine_adc_type}, ADCBLOCK2, ADC_CHANNEL_9, GPIO_NUM_20},
|
||||
#endif
|
||||
};
|
||||
|
||||
STATIC uint8_t adc_bit_width;
|
||||
STATIC adc_atten_t madc_obj_atten[MP_ARRAY_SIZE(madc_obj)];
|
||||
|
||||
STATIC mp_obj_t madc_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
|
||||
const mp_obj_t *args) {
|
||||
|
||||
static int initialized = 0;
|
||||
if (!initialized) {
|
||||
#if CONFIG_IDF_TARGET_ESP32S2
|
||||
adc1_config_width(ADC_WIDTH_BIT_13);
|
||||
#else
|
||||
adc1_config_width(ADC_WIDTH_BIT_12);
|
||||
#endif
|
||||
adc_bit_width = 12;
|
||||
initialized = 1;
|
||||
}
|
||||
|
||||
mp_arg_check_num(n_args, n_kw, 1, 1, true);
|
||||
gpio_num_t pin_id = machine_pin_get_id(args[0]);
|
||||
const madc_obj_t *self = NULL;
|
||||
const madc_obj_t *madc_search_helper(madcblock_obj_t *block, adc_channel_t channel_id, gpio_num_t gpio_id) {
|
||||
for (int i = 0; i < MP_ARRAY_SIZE(madc_obj); i++) {
|
||||
if (pin_id == madc_obj[i].gpio_id) {
|
||||
self = &madc_obj[i];
|
||||
break;
|
||||
const madc_obj_t *adc = &madc_obj[i];
|
||||
if ((block == NULL || block == adc->block) && (channel_id == -1 || channel_id == adc->channel_id) && (gpio_id == -1 || gpio_id == adc->gpio_id)) {
|
||||
return adc;
|
||||
}
|
||||
}
|
||||
if (!self) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("invalid Pin for ADC"));
|
||||
}
|
||||
esp_err_t err = adc1_config_channel_atten(self->adc1_id, ADC_ATTEN_0db);
|
||||
if (err == ESP_OK) {
|
||||
return MP_OBJ_FROM_PTR(self);
|
||||
}
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("parameter error"));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
STATIC void madc_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
||||
madc_obj_t *self = self_in;
|
||||
mp_printf(print, "ADC(Pin(%u))", self->gpio_id);
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_printf(print, "ADC(Pin(%u), atten=%u)", self->gpio_id, madc_obj_atten[self - madc_obj]);
|
||||
}
|
||||
|
||||
// read_u16()
|
||||
STATIC void madc_atten_helper(const madc_obj_t *self, mp_int_t atten) {
|
||||
esp_err_t err;
|
||||
if (self->block->unit_id == ADC_UNIT_1) {
|
||||
err = adc1_config_channel_atten(self->channel_id, atten);
|
||||
} else {
|
||||
err = adc2_config_channel_atten(self->channel_id, atten);
|
||||
}
|
||||
if (err != ESP_OK) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("invalid atten"));
|
||||
}
|
||||
madc_obj_atten[self - madc_obj] = atten;
|
||||
}
|
||||
|
||||
void madc_init_helper(const madc_obj_t *self, size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
||||
enum {
|
||||
ARG_atten,
|
||||
};
|
||||
|
||||
static const mp_arg_t allowed_args[] = {
|
||||
{ MP_QSTR_atten, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = -1} },
|
||||
};
|
||||
|
||||
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
|
||||
mp_arg_parse_all(n_pos_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
|
||||
|
||||
mp_int_t atten = args[ARG_atten].u_int;
|
||||
if (atten != -1) {
|
||||
madc_atten_helper(self, atten);
|
||||
} else if (madc_obj_atten[self - madc_obj] == -1) {
|
||||
madc_atten_helper(self, ADC_ATTEN_DB_0);
|
||||
}
|
||||
}
|
||||
|
||||
STATIC mp_obj_t madc_make_new(const mp_obj_type_t *type, size_t n_pos_args, size_t n_kw_args, const mp_obj_t *args) {
|
||||
mp_arg_check_num(n_pos_args, n_kw_args, 1, MP_OBJ_FUN_ARGS_MAX, true);
|
||||
gpio_num_t gpio_id = machine_pin_get_id(args[0]);
|
||||
const madc_obj_t *self = madc_search_helper(NULL, -1, gpio_id);
|
||||
if (!self) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("invalid pin"));
|
||||
}
|
||||
|
||||
if (self->block->width == -1) {
|
||||
madcblock_bits_helper(self->block, self->block->bits);
|
||||
}
|
||||
|
||||
mp_map_t kw_args;
|
||||
mp_map_init_fixed_table(&kw_args, n_kw_args, args + n_pos_args);
|
||||
madc_init_helper(self, n_pos_args - 1, args + 1, &kw_args);
|
||||
|
||||
return MP_OBJ_FROM_PTR(self);
|
||||
}
|
||||
|
||||
STATIC mp_obj_t madc_init(size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
|
||||
madc_init_helper(self, n_pos_args - 1, pos_args + 1, kw_args);
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(madc_init_obj, 1, madc_init);
|
||||
|
||||
STATIC mp_obj_t madc_block(mp_obj_t self_in) {
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
return MP_OBJ_FROM_PTR(self->block);
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(madc_block_obj, madc_block);
|
||||
|
||||
STATIC mp_obj_t madc_read(mp_obj_t self_in) {
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_int_t raw = madcblock_read_helper(self->block, self->channel_id);
|
||||
return MP_OBJ_NEW_SMALL_INT(raw);
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(madc_read_obj, madc_read);
|
||||
|
||||
STATIC mp_obj_t madc_read_u16(mp_obj_t self_in) {
|
||||
madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
uint32_t raw = adc1_get_raw(self->adc1_id);
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_uint_t raw = madcblock_read_helper(self->block, self->channel_id);
|
||||
// Scale raw reading to 16 bit value using a Taylor expansion (for 8 <= bits <= 16)
|
||||
uint32_t u16 = raw << (16 - adc_bit_width) | raw >> (2 * adc_bit_width - 16);
|
||||
mp_int_t bits = self->block->bits;
|
||||
mp_uint_t u16 = raw << (16 - bits) | raw >> (2 * bits - 16);
|
||||
return MP_OBJ_NEW_SMALL_INT(u16);
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(madc_read_u16_obj, madc_read_u16);
|
||||
|
||||
// Legacy method
|
||||
STATIC mp_obj_t madc_read(mp_obj_t self_in) {
|
||||
madc_obj_t *self = self_in;
|
||||
int val = adc1_get_raw(self->adc1_id);
|
||||
if (val == -1) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("parameter error"));
|
||||
}
|
||||
return MP_OBJ_NEW_SMALL_INT(val);
|
||||
STATIC mp_obj_t madc_read_uv(mp_obj_t self_in) {
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
adc_atten_t atten = madc_obj_atten[self - madc_obj];
|
||||
return MP_OBJ_NEW_SMALL_INT(madcblock_read_uv_helper(self->block, self->channel_id, atten));
|
||||
}
|
||||
MP_DEFINE_CONST_FUN_OBJ_1(madc_read_obj, madc_read);
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_1(madc_read_uv_obj, madc_read_uv);
|
||||
|
||||
STATIC mp_obj_t madc_atten(mp_obj_t self_in, mp_obj_t atten_in) {
|
||||
madc_obj_t *self = self_in;
|
||||
adc_atten_t atten = mp_obj_get_int(atten_in);
|
||||
esp_err_t err = adc1_config_channel_atten(self->adc1_id, atten);
|
||||
if (err == ESP_OK) {
|
||||
return mp_const_none;
|
||||
}
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("parameter error"));
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_int_t atten = mp_obj_get_int(atten_in);
|
||||
madc_atten_helper(self, atten);
|
||||
return mp_const_none;
|
||||
}
|
||||
MP_DEFINE_CONST_FUN_OBJ_2(madc_atten_obj, madc_atten);
|
||||
|
||||
STATIC mp_obj_t madc_width(mp_obj_t cls_in, mp_obj_t width_in) {
|
||||
adc_bits_width_t width = mp_obj_get_int(width_in);
|
||||
esp_err_t err = adc1_config_width(width);
|
||||
if (err != ESP_OK) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("parameter error"));
|
||||
}
|
||||
switch (width) {
|
||||
#if CONFIG_IDF_TARGET_ESP32
|
||||
case ADC_WIDTH_9Bit:
|
||||
adc_bit_width = 9;
|
||||
break;
|
||||
case ADC_WIDTH_10Bit:
|
||||
adc_bit_width = 10;
|
||||
break;
|
||||
case ADC_WIDTH_11Bit:
|
||||
adc_bit_width = 11;
|
||||
break;
|
||||
case ADC_WIDTH_12Bit:
|
||||
adc_bit_width = 12;
|
||||
break;
|
||||
#elif CONFIG_IDF_TARGET_ESP32S2
|
||||
case ADC_WIDTH_BIT_13:
|
||||
adc_bit_width = 13;
|
||||
break;
|
||||
#elif CONFIG_IDF_TARGET_ESP32S3
|
||||
case ADC_WIDTH_BIT_12:
|
||||
adc_bit_width = 12;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
break;
|
||||
}
|
||||
STATIC mp_obj_t madc_width(mp_obj_t self_in, mp_obj_t bits_in) {
|
||||
const madc_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_int_t bits = mp_obj_get_int(bits_in);
|
||||
madcblock_bits_helper(self->block, bits);
|
||||
return mp_const_none;
|
||||
}
|
||||
MP_DEFINE_CONST_FUN_OBJ_2(madc_width_fun_obj, madc_width);
|
||||
MP_DEFINE_CONST_CLASSMETHOD_OBJ(madc_width_obj, MP_ROM_PTR(&madc_width_fun_obj));
|
||||
MP_DEFINE_CONST_FUN_OBJ_2(madc_width_obj, madc_width);
|
||||
|
||||
STATIC const mp_rom_map_elem_t madc_locals_dict_table[] = {
|
||||
{ MP_ROM_QSTR(MP_QSTR_read_u16), MP_ROM_PTR(&madc_read_u16_obj) },
|
||||
|
||||
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&madc_init_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_block), MP_ROM_PTR(&madc_block_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&madc_read_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_read_u16), MP_ROM_PTR(&madc_read_u16_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_read_uv), MP_ROM_PTR(&madc_read_uv_obj) },
|
||||
|
||||
// Legacy API methods:
|
||||
{ MP_ROM_QSTR(MP_QSTR_atten), MP_ROM_PTR(&madc_atten_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&madc_width_obj) },
|
||||
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_0DB), MP_ROM_INT(ADC_ATTEN_0db) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_2_5DB), MP_ROM_INT(ADC_ATTEN_2_5db) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_6DB), MP_ROM_INT(ADC_ATTEN_6db) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_11DB), MP_ROM_INT(ADC_ATTEN_11db) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_0DB), MP_ROM_INT(ADC_ATTEN_DB_0) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_2_5DB), MP_ROM_INT(ADC_ATTEN_DB_2_5) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_6DB), MP_ROM_INT(ADC_ATTEN_DB_6) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ATTN_11DB), MP_ROM_INT(ADC_ATTEN_DB_11) },
|
||||
|
||||
#if CONFIG_IDF_TARGET_ESP32
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_9BIT), MP_ROM_INT(ADC_WIDTH_9Bit) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_10BIT), MP_ROM_INT(ADC_WIDTH_10Bit) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_11BIT), MP_ROM_INT(ADC_WIDTH_11Bit) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_12BIT), MP_ROM_INT(ADC_WIDTH_12Bit) },
|
||||
#elif CONFIG_IDF_TARGET_ESP32S2
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_13BIT), MP_ROM_INT(ADC_WIDTH_BIT_13) },
|
||||
#elif CONFIG_IDF_TARGET_ESP32S3
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_12BIT), MP_ROM_INT(ADC_WIDTH_BIT_12) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_9BIT), MP_ROM_INT(9) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_10BIT), MP_ROM_INT(10) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_11BIT), MP_ROM_INT(11) },
|
||||
#endif
|
||||
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_12BIT), MP_ROM_INT(12) },
|
||||
#endif
|
||||
#if CONFIG_IDF_TARGET_ESP32S2
|
||||
{ MP_ROM_QSTR(MP_QSTR_WIDTH_13BIT), MP_ROM_INT(13) },
|
||||
#endif
|
||||
};
|
||||
|
||||
};
|
||||
STATIC MP_DEFINE_CONST_DICT(madc_locals_dict, madc_locals_dict_table);
|
||||
|
||||
const mp_obj_type_t machine_adc_type = {
|
||||
|
|
|
|||
|
|
@ -0,0 +1,16 @@
|
|||
#ifndef MICROPY_INCLUDED_MACHINE_ADC_H
|
||||
#define MICROPY_INCLUDED_MACHINE_ADC_H
|
||||
|
||||
#include "machine_adcblock.h"
|
||||
|
||||
typedef struct _madc_obj_t {
|
||||
mp_obj_base_t base;
|
||||
madcblock_obj_t *block;
|
||||
adc_channel_t channel_id;
|
||||
gpio_num_t gpio_id;
|
||||
} madc_obj_t;
|
||||
|
||||
extern const madc_obj_t *madc_search_helper(madcblock_obj_t *block, adc_channel_t channel_id, gpio_num_t gpio_id);
|
||||
extern void madc_init_helper(const madc_obj_t *self, size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args);
|
||||
|
||||
#endif // MICROPY_INCLUDED_MACHINE_ADC_H
|
||||
|
|
@ -0,0 +1,203 @@
|
|||
/*
|
||||
* This file is part of the MicroPython project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2021 Jonathan Hogg
|
||||
*
|
||||
* 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 "esp_log.h"
|
||||
|
||||
#include "driver/gpio.h"
|
||||
#include "driver/adc.h"
|
||||
|
||||
#include "py/runtime.h"
|
||||
#include "py/mphal.h"
|
||||
#include "modmachine.h"
|
||||
#include "machine_adc.h"
|
||||
#include "machine_adcblock.h"
|
||||
|
||||
#define DEFAULT_VREF 1100
|
||||
|
||||
madcblock_obj_t madcblock_obj[] = {
|
||||
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C3
|
||||
{{&machine_adcblock_type}, ADC_UNIT_1, 12, -1, {0}},
|
||||
{{&machine_adcblock_type}, ADC_UNIT_2, 12, -1, {0}},
|
||||
#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
||||
{{&machine_adcblock_type}, ADC_UNIT_1, 13, -1, {0}},
|
||||
{{&machine_adcblock_type}, ADC_UNIT_2, 13, -1, {0}},
|
||||
#endif
|
||||
};
|
||||
|
||||
STATIC void madcblock_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
||||
madcblock_obj_t *self = MP_OBJ_TO_PTR(self_in);
|
||||
mp_printf(print, "ADCBlock(%u, bits=%u)", self->unit_id, self->bits);
|
||||
}
|
||||
|
||||
void madcblock_bits_helper(madcblock_obj_t *self, mp_int_t bits) {
|
||||
switch (bits) {
|
||||
#if CONFIG_IDF_TARGET_ESP32
|
||||
case 9:
|
||||
self->width = ADC_WIDTH_BIT_9;
|
||||
break;
|
||||
case 10:
|
||||
self->width = ADC_WIDTH_BIT_10;
|
||||
break;
|
||||
case 11:
|
||||
self->width = ADC_WIDTH_BIT_11;
|
||||
break;
|
||||
#endif
|
||||
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
|
||||
case 12:
|
||||
self->width = ADC_WIDTH_BIT_12;
|
||||
break;
|
||||
#endif
|
||||
#if CONFIG_IDF_TARGET_ESP32S2
|
||||
case 13:
|
||||
self->width = ADC_WIDTH_BIT_13;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("invalid bits"));
|
||||
}
|
||||
self->bits = bits;
|
||||
|
||||
if (self->unit_id == ADC_UNIT_1) {
|
||||
adc1_config_width(self->width);
|
||||
}
|
||||
for (adc_atten_t atten = ADC_ATTEN_DB_0; atten < ADC_ATTEN_MAX; atten++) {
|
||||
if (self->characteristics[atten] != NULL) {
|
||||
esp_adc_cal_characterize(self->unit_id, atten, self->width, DEFAULT_VREF, self->characteristics[atten]);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
STATIC void madcblock_init_helper(madcblock_obj_t *self, size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
||||
enum {
|
||||
ARG_bits,
|
||||
};
|
||||
|
||||
static const mp_arg_t allowed_args[] = {
|
||||
{ MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = -1} },
|
||||
};
|
||||
|
||||
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
|
||||
mp_arg_parse_all(n_pos_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
|
||||
|
||||
mp_int_t bits = args[ARG_bits].u_int;
|
||||
if (bits != -1) {
|
||||
madcblock_bits_helper(self, bits);
|
||||
} else if (self->width == -1) {
|
||||
madcblock_bits_helper(self, self->bits);
|
||||
}
|
||||
}
|
||||
|
||||
STATIC mp_obj_t madcblock_make_new(const mp_obj_type_t *type, size_t n_pos_args, size_t n_kw_args, const mp_obj_t *args) {
|
||||
mp_arg_check_num(n_pos_args, n_kw_args, 1, MP_OBJ_FUN_ARGS_MAX, true);
|
||||
adc_unit_t unit = mp_obj_get_int(args[0]);
|
||||
madcblock_obj_t *self = NULL;
|
||||
for (int i = 0; i < MP_ARRAY_SIZE(madcblock_obj); i++) {
|
||||
if (unit == madcblock_obj[i].unit_id) {
|
||||
self = &madcblock_obj[i];
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!self) {
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("invalid block id"));
|
||||
}
|
||||
|
||||
mp_map_t kw_args;
|
||||
mp_map_init_fixed_table(&kw_args, n_kw_args, args + n_pos_args);
|
||||
madcblock_init_helper(self, n_pos_args - 1, args + 1, &kw_args);
|
||||
|
||||
return MP_OBJ_FROM_PTR(self);
|
||||
}
|
||||
|
||||
STATIC mp_obj_t madcblock_init(size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
||||
madcblock_obj_t *self = pos_args[0];
|
||||
madcblock_init_helper(self, n_pos_args - 1, pos_args + 1, kw_args);
|
||||
return mp_const_none;
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(madcblock_init_obj, 1, madcblock_init);
|
||||
|
||||
STATIC mp_obj_t madcblock_connect(size_t n_pos_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
||||
madcblock_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
|
||||
adc_channel_t channel_id = -1;
|
||||
gpio_num_t gpio_id = -1;
|
||||
if (n_pos_args == 2) {
|
||||
if (mp_obj_is_int(pos_args[1])) {
|
||||
channel_id = mp_obj_get_int(pos_args[1]);
|
||||
} else {
|
||||
gpio_id = machine_pin_get_id(pos_args[1]);
|
||||
}
|
||||
} else if (n_pos_args == 3) {
|
||||
channel_id = mp_obj_get_int(pos_args[1]);
|
||||
gpio_id = machine_pin_get_id(pos_args[2]);
|
||||
} else {
|
||||
mp_raise_TypeError(MP_ERROR_TEXT("too many positional args"));
|
||||
}
|
||||
|
||||
const madc_obj_t *adc = madc_search_helper(self, channel_id, gpio_id);
|
||||
if (adc != NULL) {
|
||||
madc_init_helper(adc, 0, pos_args + n_pos_args, kw_args);
|
||||
return MP_OBJ_FROM_PTR(adc);
|
||||
}
|
||||
mp_raise_ValueError(MP_ERROR_TEXT("no matching ADC"));
|
||||
}
|
||||
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(madcblock_connect_obj, 2, madcblock_connect);
|
||||
|
||||
mp_int_t madcblock_read_helper(madcblock_obj_t *self, adc_channel_t channel_id) {
|
||||
int raw;
|
||||
if (self->unit_id == ADC_UNIT_1) {
|
||||
raw = adc1_get_raw(channel_id);
|
||||
} else {
|
||||
check_esp_err(adc2_get_raw(channel_id, self->width, &raw));
|
||||
}
|
||||
return raw;
|
||||
}
|
||||
|
||||
mp_int_t madcblock_read_uv_helper(madcblock_obj_t *self, adc_channel_t channel_id, adc_atten_t atten) {
|
||||
int raw = madcblock_read_helper(self, channel_id);
|
||||
esp_adc_cal_characteristics_t *adc_chars = self->characteristics[atten];
|
||||
if (adc_chars == NULL) {
|
||||
adc_chars = malloc(sizeof(esp_adc_cal_characteristics_t));
|
||||
esp_adc_cal_characterize(self->unit_id, atten, self->width, DEFAULT_VREF, adc_chars);
|
||||
self->characteristics[atten] = adc_chars;
|
||||
}
|
||||
mp_int_t uv = esp_adc_cal_raw_to_voltage(raw, adc_chars) * 1000;
|
||||
return uv;
|
||||
}
|
||||
|
||||
STATIC const mp_rom_map_elem_t madcblock_locals_dict_table[] = {
|
||||
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&madcblock_init_obj) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_connect), MP_ROM_PTR(&madcblock_connect_obj) },
|
||||
};
|
||||
STATIC MP_DEFINE_CONST_DICT(madcblock_locals_dict, madcblock_locals_dict_table);
|
||||
|
||||
const mp_obj_type_t machine_adcblock_type = {
|
||||
{ &mp_type_type },
|
||||
.name = MP_QSTR_ADCBlock,
|
||||
.print = madcblock_print,
|
||||
.make_new = madcblock_make_new,
|
||||
.locals_dict = (mp_obj_t)&madcblock_locals_dict,
|
||||
};
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
#ifndef MICROPY_INCLUDED_MACHINE_ADCBLOCK_H
|
||||
#define MICROPY_INCLUDED_MACHINE_ADCBLOCK_H
|
||||
|
||||
#include "esp_adc_cal.h"
|
||||
|
||||
typedef struct _madcblock_obj_t {
|
||||
mp_obj_base_t base;
|
||||
adc_unit_t unit_id;
|
||||
mp_int_t bits;
|
||||
adc_bits_width_t width;
|
||||
esp_adc_cal_characteristics_t *characteristics[ADC_ATTEN_MAX];
|
||||
} madcblock_obj_t;
|
||||
|
||||
extern madcblock_obj_t madcblock_obj[];
|
||||
|
||||
extern void madcblock_bits_helper(madcblock_obj_t *self, mp_int_t bits);
|
||||
extern mp_int_t madcblock_read_helper(madcblock_obj_t *self, adc_channel_t channel_id);
|
||||
extern mp_int_t madcblock_read_uv_helper(madcblock_obj_t *self, adc_channel_t channel_id, adc_atten_t atten);
|
||||
|
||||
#endif // MICROPY_INCLUDED_MACHINE_ADCBLOCK_H
|
||||
|
|
@ -59,6 +59,7 @@ set(MICROPY_SOURCE_PORT
|
|||
${PROJECT_DIR}/machine_pin.c
|
||||
${PROJECT_DIR}/machine_touchpad.c
|
||||
${PROJECT_DIR}/machine_adc.c
|
||||
${PROJECT_DIR}/machine_adcblock.c
|
||||
${PROJECT_DIR}/machine_dac.c
|
||||
${PROJECT_DIR}/machine_i2c.c
|
||||
${PROJECT_DIR}/machine_i2s.c
|
||||
|
|
@ -98,6 +99,7 @@ set(IDF_COMPONENTS
|
|||
bootloader_support
|
||||
bt
|
||||
driver
|
||||
esp_adc_cal
|
||||
esp_common
|
||||
esp_eth
|
||||
esp_event
|
||||
|
|
|
|||
|
|
@ -297,6 +297,7 @@ STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
|
|||
{ MP_ROM_QSTR(MP_QSTR_TouchPad), MP_ROM_PTR(&machine_touchpad_type) },
|
||||
#endif
|
||||
{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&machine_adc_type) },
|
||||
{ MP_ROM_QSTR(MP_QSTR_ADCBlock), MP_ROM_PTR(&machine_adcblock_type) },
|
||||
#if MICROPY_PY_MACHINE_DAC
|
||||
{ MP_ROM_QSTR(MP_QSTR_DAC), MP_ROM_PTR(&machine_dac_type) },
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@ extern const mp_obj_type_t machine_wdt_type;
|
|||
extern const mp_obj_type_t machine_pin_type;
|
||||
extern const mp_obj_type_t machine_touchpad_type;
|
||||
extern const mp_obj_type_t machine_adc_type;
|
||||
extern const mp_obj_type_t machine_adcblock_type;
|
||||
extern const mp_obj_type_t machine_dac_type;
|
||||
extern const mp_obj_type_t machine_hw_i2c_type;
|
||||
extern const mp_obj_type_t machine_hw_spi_type;
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue