62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/*
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* TMP144.h
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*
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* Created on: Mar 22, 2022
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* Author: Jasper
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*/
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#ifndef INC_TMP144_H_
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#define INC_TMP144_H_
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#include "common_defs.h"
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#include "stm32f4xx_hal.h"
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#include "stm32f4xx_hal_def.h"
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#include "stm32f4xx_hal_uart.h"
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#define N_TEMP_SENSORS 32
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#define TMP144_RESPONSE_TIMEOUT 100 /* ms */
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extern volatile uint16_t temperatures[N_TEMP_SENSORS];
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extern volatile uint16_t min_temperature;
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extern volatile uint16_t max_temperature;
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typedef enum {
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TMP144_IDLE,
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TMP144_RESETTING,
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TMP144_INITIALIZING,
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TMP144_READING_TEMP,
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TMP144_ERROR
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} TMP144State;
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typedef struct {
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UART_HandleTypeDef* handle;
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TMP144State state;
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uint8_t rxbuf[34];
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size_t n_sensors;
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uint32_t expected_response_time;
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} TMP144Bus;
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extern volatile TMP144Bus tmp144_bus_busbar;
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extern volatile TMP144Bus tmp144_bus_other;
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HAL_StatusTypeDef tmp144_init(UART_HandleTypeDef* busbar_side,
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UART_HandleTypeDef* other_side);
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HAL_StatusTypeDef tmp144_check_timeouts();
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HAL_StatusTypeDef tmp144_init_reset(TMP144Bus* bus);
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HAL_StatusTypeDef tmp144_init_post_reset(TMP144Bus* bus);
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HAL_StatusTypeDef tmp144_init_post_addr(TMP144Bus* bus);
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HAL_StatusTypeDef tmp144_read_temps();
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HAL_StatusTypeDef tmp144_send_read_temps(TMP144Bus* bus);
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HAL_StatusTypeDef tmp144_recv_temps(TMP144Bus* bus);
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void tmp144_handle_rx_cplt(UART_HandleTypeDef* handle);
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#endif /* INC_TMP144_H_ */
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