forked from electro/esp-irblaster
parent
f9d3fa3cec
commit
2917a84eb5
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#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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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 int16_t 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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int16_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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ESP_LOGI(TAG, "t1 %d, t2 %d Cx10", a, b); |
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gTempSensors[0] = a; |
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gTempSensors[1] = 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(int16_t *a, int16_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(10)); // to be sure its 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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if (errors[0] != DS18B20_OK || errors[1] != DS18B20_OK) { |
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return -1; |
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} |
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*a = (int16_t) roundf(readings[0] * 10); |
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*b = (int16_t) roundf(readings[1] * 10); |
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return 0; |
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} |
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@ -0,0 +1,17 @@ |
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/**
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* Reading onewire sensors |
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*/ |
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#ifndef ONEWIRES_H |
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#define ONEWIRES_H |
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#include <stdint.h> |
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void onewires_setup(); |
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int read_onewires(int16_t *a, int16_t *b); |
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extern volatile int16_t gTempSensors[2]; |
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extern volatile bool tempSensorsOk; |
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#endif //ONEWIRES_H
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