50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#include "tca9555_driver.h"
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#include "esp_log.h"
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#include "bsp_board.h"
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esp_io_expander_handle_t io_expander = NULL;
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void tca9555_driver_init(void)
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{
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i2c_master_bus_handle_t i2c_bus = esp_ret_i2c_handle();
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esp_err_t ret = esp_io_expander_new_i2c_tca95xx_16bit(i2c_bus, ESP_IO_EXPANDER_I2C_TCA9555_ADDRESS_000, &io_expander);
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/* Test output level function */
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ret = esp_io_expander_set_dir(io_expander, (IO_EXPANDER_PIN_NUM_0 | IO_EXPANDER_PIN_NUM_1 | IO_EXPANDER_PIN_NUM_5 | IO_EXPANDER_PIN_NUM_6 | IO_EXPANDER_PIN_NUM_8), IO_EXPANDER_OUTPUT);
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if(ret != ESP_OK){
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printf("EXIO Mode setting failure!!\r\n");
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}
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ret = esp_io_expander_set_dir(io_expander, (IO_EXPANDER_PIN_NUM_2 | IO_EXPANDER_PIN_NUM_9 | IO_EXPANDER_PIN_NUM_10 | IO_EXPANDER_PIN_NUM_11), IO_EXPANDER_INPUT);
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if(ret != ESP_OK){
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printf("EXIO Mode setting failure!!\r\n");
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}
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}
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/********************************************************** Set the EXIO output status **********************************************************/
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void Set_EXIO(uint32_t Pin,uint8_t State) // Sets the level state of the Pin without affecting the other pins(PIN：1~8)
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{
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esp_err_t ret;
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ret = esp_io_expander_set_level(io_expander, Pin, State);
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if(ret != ESP_OK){
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printf("EXIO level setting failure!!\r\n");
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}
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}
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/********************************************************** Read EXIO status **********************************************************/
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bool Read_EXIO(uint32_t Pin) // Read the level of the TCA9555PWR Pin
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{
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esp_err_t ret;
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uint32_t input_level_mask = 0;
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ret = esp_io_expander_get_level(io_expander, Pin, &input_level_mask);
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if(ret != ESP_OK){
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printf("EXIO level reading failure!!\r\n");
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}
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bool bitStatus = input_level_mask & Pin;
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return bitStatus;
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} |