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st25dv.c
146 lines (113 loc) 路 4.34 KB
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st25dv.c
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/*
* Written by RJRP - 28/10/2023
* ST25 Library for idf framework
* This program is distributed under the MIT License
*/
#include <memory.h>
#include <st25dv_registers.h>
#include "st25dv.h"
#include "driver/i2c.h"
esp_err_t st25dv_write_byte(uint8_t st25_address, uint16_t address, uint8_t byte) {
esp_err_t ret;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
//St25 Write sequence :
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_WRITE, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address >> 8, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address & 0xFF, ACK_CHECK_EN);
i2c_master_write_byte(cmd, byte, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(I2C_NUM_1, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return ret;
}
esp_err_t st25dv_read_byte(uint8_t st25_address, uint16_t address, uint8_t *byte) {
esp_err_t ret;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
//St25 Read sequence :
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_WRITE, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address >> 8, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address & 0xFF, ACK_CHECK_EN);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_READ, ACK_CHECK_EN);
i2c_master_read_byte(cmd, byte, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(I2C_NUM_1, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return ret;
}
esp_err_t st25dv_write_bit(uint8_t st25_address, uint16_t address, uint8_t bit_mask, bool bit) {
uint8_t byte = 0;
esp_err_t ret;
ret = st25dv_read_byte(st25_address, address, &byte);
if (ret != ESP_OK) {
return ret;
}
if (bit) {
byte |= bit_mask;
} else {
byte &= ~bit_mask;
}
ret = st25dv_write_byte(st25_address, address, byte);
return ret;
}
esp_err_t st25dv_read_bit(uint8_t st25_address, uint16_t address, uint8_t bit_mask, bool *bit) {
uint8_t byte = 0;
esp_err_t ret;
ret = st25dv_read_byte(st25_address, address, &byte);
if (ret != ESP_OK) {
return ret;
}
*bit = (byte & bit_mask);
return ESP_OK;
}
esp_err_t st25dv_init_i2c(i2c_port_t port, i2c_config_t config) {
i2c_param_config(port, &config);
i2c_set_timeout(port, 0x0000001FU);
return i2c_driver_install(port, config.mode, 0, 0, 0);
}
esp_err_t st25dv_write(uint8_t st25_address, uint16_t address, uint8_t *data, size_t size) {
esp_err_t ret;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
//St25 Write sequence :
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_WRITE, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address >> 8, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address & 0xFF, ACK_CHECK_EN);
i2c_master_write(cmd, data, size, ACK_CHECK_EN);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(I2C_NUM_1, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return ret;
}
esp_err_t st25dv_read(uint8_t st25_address, uint16_t address, uint8_t *data, size_t size) {
esp_err_t ret;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
//St25 Read sequence :
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_WRITE, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address >> 8, ACK_CHECK_EN);
i2c_master_write_byte(cmd, address & 0xFF, ACK_CHECK_EN);
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (st25_address << 1) | I2C_MASTER_READ, ACK_CHECK_EN);
if (size > 1) {
i2c_master_read(cmd, data, size - 1, 0);
}
i2c_master_read_byte(cmd, data + size - 1, 1);
i2c_master_stop(cmd);
ret = i2c_master_cmd_begin(I2C_NUM_1, cmd, 1000 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return ret;
}
esp_err_t st25dv_open_session(uint8_t st25_address, uint64_t password){
uint8_t buffer[8 * 2 + 1] = {0};
uint8_t *buffer_ptr = buffer + 9;
memcpy(buffer, &password, sizeof(password));
buffer[8] = 0x09;
memcpy(buffer_ptr, &password, sizeof(password));
return st25dv_write(st25_address, REG_I2C_PASSWD_BASE,buffer, 17);
}
esp_err_t st25dv_is_session_opened(uint8_t st25_address, bool *bit){
return st25dv_read_bit(st25_address, REG_I2C_SSO_DYN, BIT_I2C_SSO_DYN_I2C_SSO, bit);
}