forked from electro/esp-irblaster
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76 lines
2.0 KiB
76 lines
2.0 KiB
#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <math.h>
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#include <esp_log.h>
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#include "onewires.h"
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#include "tasks.h"
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#include "owb.h"
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#include "ds18b20.h"
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#include "settings.h"
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#include "recup_types.h"
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static const char* TAG="1w";
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static owb_rmt_driver_info s_rmt_driver_info[2] = {};
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static OneWireBus * sBuses[2] = {};
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static DS18B20_Info *sDevs[2] = {};
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volatile float gTempSensors[2] = {};
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volatile bool tempSensorsOk = false;
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static void owtask(void *dummy) {
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while (1) {
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cels_t a = 0, b = 0;
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int rv = read_onewires(&a, &b);
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tempSensorsOk = (rv == 0);
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gTempSensors[0] = a;
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gTempSensors[1] = b;
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ESP_LOGI(TAG, "t1 %.2f, t2 %.2f C", a, b);
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}
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}
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void onewires_setup()
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{
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sBuses[0] = owb_rmt_initialize(&s_rmt_driver_info[0], CONFIG_PIN_1WIRE_1, RMT_CHANNEL_1, RMT_CHANNEL_0);
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sBuses[1] = owb_rmt_initialize(&s_rmt_driver_info[1], CONFIG_PIN_1WIRE_2, RMT_CHANNEL_3, RMT_CHANNEL_2);
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for (int i = 0; i < 2; i++) {
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owb_use_crc(sBuses[i], true);
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sDevs[i] = ds18b20_malloc();
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ds18b20_init_solo(sDevs[i], sBuses[i]);
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ds18b20_use_crc(sDevs[i], true);
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ds18b20_set_resolution(sDevs[i], DS18B20_RESOLUTION_12_BIT);
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}
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xTaskCreate(owtask, "1w", ONEWIRES_TASK_STACK, NULL, ONEWIRES_TASK_PRIO, NULL);
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}
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int read_onewires(cels_t *a, cels_t *b)
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{
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for (int i = 0; i < 2; i++) {
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ds18b20_convert_all(sBuses[i]);
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}
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float readings[2] = { 0 };
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DS18B20_ERROR errors[2] = { 0 };
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ds18b20_wait_for_conversion(sDevs[0]);
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vTaskDelay(pdMS_TO_TICKS(15)); // to be sure it's done
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for (int i = 0; i < 2; i++) {
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errors[i] = ds18b20_read_temp(sDevs[i], &readings[i]);
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}
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cels_t val1 = (cels_t) readings[0];
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cels_t val2 = (cels_t) readings[1];
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if (gSettings.swap_temps) {
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*a = val2;
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*b = val1;
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} else {
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*a = val1;
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*b = val2;
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}
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return (errors[0] == DS18B20_OK) && (errors[1] != DS18B20_OK);
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}
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