173 lines
5.3 KiB
C
173 lines
5.3 KiB
C
#include "eeprom_lc02b.h"
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#include "delay.h"
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#include "i2cs.h"
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#define W_ADD_COM 0xa8 // 写字节命令及器件地址(根据地址实际情况改变), 1010 A2 A1 A0 0
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#define R_ADD_COM 0xa9 // 读命令字节及器件地址(根据地址实际情况改变), 1010 A2 A1 A0 1
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#define PAGE_SIZE 8U
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#define SIZE 256U
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#define EEPROM_LC02B_SDA_PORT I2C1_SDA_GPIO_Port
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#define EEPROM_LC02B_SDA_PIN I2C1_SDA_Pin
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#define EEPROM_LC02B_SCL_PORT I2C1_SCL_GPIO_Port
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#define EEPROM_LC02B_SCL_PIN I2C1_SCL_Pin
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static i2c_t *_eeprom_24lc028bt_i2c;
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static TIM_TypeDef *_timer_us;
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static void _delay_us(uint32_t us)
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{
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if (_timer_us != NULL)
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{
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delay_hardware_us(_timer_us, us);
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}
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else
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{
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delay_us(us);
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}
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}
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void eeprom_lc02b_test(void)
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{
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#define TEST_SIZE 15
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uint16_t test_address = SIZE - TEST_SIZE;
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uint8_t buf[TEST_SIZE];
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for (uint8_t i = 0; i < TEST_SIZE; i++)
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{
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buf[i] = i + 1;
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}
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eeprom_lc02b_write(test_address, buf, TEST_SIZE);
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_delay_us(10000);
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osel_memset(buf, 0, ARRAY_LEN(buf));
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eeprom_lc02b_read(test_address, buf, TEST_SIZE);
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__NOP();
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}
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/**
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* @brief 获取EEPROM LC02B的状态
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*
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* 此函数用于获取EEPROM LC02B的当前状态。
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*
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* @return 如果EEPROM LC02B处于正常状态，则返回TRUE；否则返回FALSE。
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* 注意：在本实现中，总是返回TRUE，因为这是一个简单的示例函数。
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*/
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BOOL eeprom_lc02b_status_get(void)
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{
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return TRUE;
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}
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/**
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* @brief EEPROM LC02B初始化
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* @return {*}
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* @note
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*/
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void eeprom_lc02b_init(TIM_TypeDef *timer_us)
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{
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if (timer_us != NULL)
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{
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_timer_us = timer_us;
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ENABLE_TIM_COUNT(_timer_us);
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}
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i2c_gpio_group_t gpios;
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gpios.scl = gpio_create(EEPROM_LC02B_SCL_PORT, EEPROM_LC02B_SCL_PIN);
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gpios.sda = gpio_create(EEPROM_LC02B_SDA_PORT, EEPROM_LC02B_SDA_PIN);
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_eeprom_24lc028bt_i2c = i2c_create(gpios, 10);
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// eeprom_lc02b_test();
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}
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/**
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* @brief EEPROM LC02B反初始化
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* @return {*}
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* @note
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*/
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void eeprom_lc02b_dinit(void)
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{
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GPIO_SET_ANALOG(EEPROM_LC02B_SDA_PORT, EEPROM_LC02B_SDA_PIN);
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GPIO_SET_ANALOG(EEPROM_LC02B_SCL_PORT, EEPROM_LC02B_SCL_PIN);
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}
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/**
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* @brief 写入数据
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* @param {uint32_t} write_addr
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* @param {uint8_t} *data
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* @param {uint16_t} length
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* @return {*}
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* @note
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*/
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void eeprom_lc02b_write(uint32_t write_addr, uint8_t *data, uint16_t length)
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{
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// 发送开始信号
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_eeprom_24lc028bt_i2c->interface.start(_eeprom_24lc028bt_i2c);
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// 发送写入地址命令
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, W_ADD_COM);
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// 等待写入地址命令响应
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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// 发送要写入的地址
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, (uint8_t)write_addr);
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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// 循环写入数据
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for (uint16_t i = 0; i < length; i++)
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{
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// 写入一个字节数据
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, *data++);
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// 等待响应
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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write_addr++;
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if (write_addr % PAGE_SIZE == 0)
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{
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_eeprom_24lc028bt_i2c->interface.stop(_eeprom_24lc028bt_i2c);
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_delay_us(10000); // 延时10ms，等待写入完成
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_eeprom_24lc028bt_i2c->interface.start(_eeprom_24lc028bt_i2c);
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, W_ADD_COM);
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, (uint8_t)write_addr);
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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}
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}
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// 写入完成，停止I2C总线
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_eeprom_24lc028bt_i2c->interface.stop(_eeprom_24lc028bt_i2c);
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}
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/**
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* @brief 读取数据
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* @param {uint32_t} read_addr
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* @param {uint8_t} *data
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* @param {uint16_t} length
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* @return {*}
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* @note
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*/
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void eeprom_lc02b_read(uint32_t read_addr, uint8_t *data, uint16_t length)
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{
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// 发送开始信号
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_eeprom_24lc028bt_i2c->interface.start(_eeprom_24lc028bt_i2c);
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// 发送写入地址命令
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, W_ADD_COM);
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// 等待写入地址命令响应
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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// 发送要读取的地址
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, (uint8_t)read_addr);
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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// 发送开始信号
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_eeprom_24lc028bt_i2c->interface.start(_eeprom_24lc028bt_i2c);
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// 发送读取地址命令
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_eeprom_24lc028bt_i2c->interface.write_byte(_eeprom_24lc028bt_i2c, R_ADD_COM);
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// 等待读取地址命令响应
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_eeprom_24lc028bt_i2c->interface.wait_ack(_eeprom_24lc028bt_i2c);
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// 循环读取数据
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for (uint16_t i = 0; i < length - 1; i++)
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{
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// 读取一个字节数据
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*data++ = _eeprom_24lc028bt_i2c->interface.read_byte(_eeprom_24lc028bt_i2c, TRUE);
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}
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*data++ = _eeprom_24lc028bt_i2c->interface.read_byte(_eeprom_24lc028bt_i2c, FALSE);
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// 停止I2C总线
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_eeprom_24lc028bt_i2c->interface.stop(_eeprom_24lc028bt_i2c);
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}
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