96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
#include <stdio.h>
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#include "driver/i2c.h"
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#include "freertos/FreeRTOS.h"
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#include "esp_system.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "fram.h"
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static const char *TAG = "fram";
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/**
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* @brief i2c master initialization
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*/
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esp_err_t i2c_master_init(void)
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{
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int i2c_master_port = I2C_MASTER_NUM;
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i2c_config_t conf = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = I2C_MASTER_SDA_IO,
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.scl_io_num = I2C_MASTER_SCL_IO,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = I2C_MASTER_FREQ_HZ,
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};
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i2c_param_config(i2c_master_port, &conf);
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return i2c_driver_install(i2c_master_port, conf.mode, I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);
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}
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int fram_write(uint16_t addr, void *buf,uint32_t len)
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{
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esp_err_t ret;
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uint8_t slave_addr = (0xA0) | ((addr >> 8) & 0x7);/*page select*/
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uint8_t low_addr = addr &0xff;
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// return HAL_I2C_Mem_Write(&hi2c1,slave_addr,addr&0xff,I2C_MEMADD_SIZE_8BIT,buf,len,200);
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// ret = i2c_master_write_to_device(I2C_MASTER_NUM, slave_addr, txbuf, len+1, 10);
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// // ret = i2c_master_write_read_device(I2C_MASTER_NUM, slave_addr, buf, len, 10);
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// // assert(ret == ESP_OK);
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, slave_addr | WRITE_BIT, ACK_CHECK_EN);
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i2c_master_write(cmd, &low_addr, 1, ACK_CHECK_EN);
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i2c_master_write(cmd, buf, len, ACK_CHECK_EN);
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i2c_master_stop(cmd);
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ret = i2c_master_cmd_begin(I2C_MASTER_NUM, cmd, 1000 / portTICK_PERIOD_MS);
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if (ret != ESP_OK) {
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printf("esp_err : %s \n", esp_err_to_name(ret));
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return ret;
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}
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ESP_LOGI(TAG,"fram_write succeed\n");
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i2c_cmd_link_delete(cmd);
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return ret;
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}
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int fram_read(uint16_t addr,void * buf,uint32_t len)
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{
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// esp_err_t err = i2c_param_config(i2c_master_port, &conf);
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esp_err_t ret;
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uint8_t slave_addr = (0xA0>>1) | ((addr >> 8) & 0x7);/*page select*/
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uint8_t low_addr = addr &0xff;
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// return HAL_I2C_Mem_Read(&hi2c1,slave_addr,addr&0xff,I2C_MEMADD_SIZE_8BIT,buf,len,200);
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ret = i2c_master_write_read_device(I2C_MASTER_NUM, slave_addr, &low_addr,1, buf, len, 10);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG,"esp_err : %s \n", esp_err_to_name(ret));
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return ret;
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}
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ESP_LOGI(TAG,"fram_read succeed\n");
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// ESP_LOGI(TAG, "buf value : %d \n ", buf[0]);
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return 0;
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}
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void save_para(void)
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{
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}
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void save_encode(void)
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{
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}
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void read_para()
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{
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}
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void clear_para()
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{
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}
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