board/main/pca9555.c

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#pragma once
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#include <stdio.h>
#include <stdlib.h>
#include "driver/i2c.h"
#include "esp_log.h"
#include "i2c.c"
#define PCA_9555_TAG "PCA9555"
// Register of command byte
#define PCA95555_CMD_INPUT_PORT_0 0x00
#define PCA95555_CMD_INPUT_PORT_1 0x01
#define PCA95555_CMD_OUTPUT_PORT_0 0x02
#define PCA95555_CMD_OUTPUT_PORT_1 0x03
#define PCA95555_CMD_POLARITY_INVERSION_PORT_0 0x04
#define PCA95555_CMD_POLARITY_INVERSION_PORT_1 0x05
#define PCA95555_CMD_CONFIGURATION_PORT_0 0x06
#define PCA95555_CMD_CONFIGURATION_PORT_1 0x07
esp_err_t pca9555_write_config(uint8_t cmd_byte, uint8_t data) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, PCA9555_ADDRESS << 1 | I2C_MASTER_WRITE,
ACK_CHECK_EN);
i2c_master_write_byte(cmd, cmd_byte, ACK_CHECK_EN);
i2c_master_write_byte(cmd, data, ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t error =
i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
if (error != ESP_OK) {
ESP_LOGW(PCA_9555_TAG, "write config failed. %d", error);
}
return error;
}
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esp_err_t pca9555_write_output(uint8_t cmd_byte, uint8_t data) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, PCA9555_ADDRESS << 1 | I2C_MASTER_WRITE,
ACK_CHECK_EN);
i2c_master_write_byte(cmd, cmd_byte, ACK_CHECK_EN);
i2c_master_write_byte(cmd, data, ACK_CHECK_EN);
i2c_master_stop(cmd);
esp_err_t error =
i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
if (error != ESP_OK) {
ESP_LOGW(PCA_9555_TAG, "write output failed. %d", error);
}
return error;
}
esp_err_t pca9555_read_one_input(uint8_t cmd_byte, uint8_t* data) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, PCA9555_ADDRESS << 1 | I2C_MASTER_WRITE,
ACK_CHECK_EN);
i2c_master_write_byte(cmd, cmd_byte, ACK_CHECK_EN);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, PCA9555_ADDRESS << 1 | I2C_MASTER_READ,
ACK_CHECK_EN);
i2c_master_read_byte(cmd, data, NACK_VAL);
i2c_master_stop(cmd);
esp_err_t error =
i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
if (error != ESP_OK) {
ESP_LOGW(PCA_9555_TAG, "read input failed. %d", error);
}
return error;
}
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void pca9555_fetch(void* arg) {
ESP_LOGI(PCA_9555_TAG, "fetching");
esp_err_t error;
uint8_t buff;
char disp_str[17];
for (;;) {
error = pca9555_read_one_input(PCA95555_CMD_INPUT_PORT_1, &buff);
if (error != ESP_OK) {
ESP_LOGW(PCA_9555_TAG, "read failed. %x", error);
} else {
ESP_LOGD(PCA_9555_TAG, "IO0: 0x%2x", buff);
}
vTaskDelay(pdMS_TO_TICKS(10));
}
}
void pca9555_auto_fetch() {
if (is_apds_9930_online == 0) {
return;
}
xTaskCreate(pca9555_fetch, "pac05555-fetching", 2048, NULL, 10, NULL);
}
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void pca9555_init() {
if (is_pca9555_online == 0) {
ESP_LOGE(PCA_9555_TAG, "salve offline");
return;
}
ESP_LOGI(PCA_9555_TAG, "Initializing PCA9555");
esp_log_level_set(PCA_9555_TAG, ESP_LOG_DEBUG);
pca9555_write_config(PCA95555_CMD_CONFIGURATION_PORT_1, 0x12);
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}