概述
AT+CUSTOTA=total_len,current_packet_len,offset,checksum
OK
MCU 收到 > 之后发送 data，当前数据写入到 FLASH 之后，打印 RECV OK，当接收到 total_len 所有数据之后，如果校验成功会打印 CUSTOTA OK，否则会打印 ERROR
total_len： 整个 bin 的大小
current_packet_len：当前包的大小
offset：当前包在 bin 中的偏移地址
checksum：当前包的 checksum
data：当前包的数据
NOTE：在当前的 demo 的 esp8266 的 app bin 文件烧录在 0x110000 的位置
/* UART Echo Example
This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/uart.h"
#include "esp_spi_flash.h"
#include "string.h"
/**
* This is an example which echos any data it receives on UART1 back to the sender,
* with hardware flow control turned off. It does not use UART driver event queue.
*
* - Port: UART1
* - Receive (Rx) buffer: on
* - Transmit (Tx) buffer: off
* - Flow control: off
* - Event queue: off
* - Pin assignment: see defines below
*/
#define ECHO_TEST_TXD (GPIO_NUM_4)
#define ECHO_TEST_RXD (GPIO_NUM_5)
#define ECHO_TEST_RTS (UART_PIN_NO_CHANGE)
#define ECHO_TEST_CTS (UART_PIN_NO_CHANGE)
#define READ_BIN_MIN(A,B) ((A) < (B) ? (A):(B))
#define BUF_SIZE (1024)
#define BUF_SIZE_RECV (128)
#define BUF_SIZE_RECV_DELIMITER (1)
#define BUF_SIZE_RECV_RECV_OK (7)
static void echo_task()
{
/* Configure parameters of an UART driver,
* communication pins and install the driver */
uart_config_t uart_config = {
.baud_rate = 115200,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE
};
uart_param_config(UART_NUM_1, &uart_config);
uart_set_pin(UART_NUM_1, ECHO_TEST_TXD, ECHO_TEST_RXD, ECHO_TEST_RTS, ECHO_TEST_CTS);
uart_driver_install(UART_NUM_1, BUF_SIZE * 2, 0, 0, NULL, 0);
uint8_t flash_read_data[BUF_SIZE] = { 0 };
uint32_t bin_flash_length = 134704;
uint32_t s_bin_flash_length = 134704;
uint32_t to_read = 0;
uint32_t read = 0;
uint32_t offset = 0x110000;
uint32_t bin_offset = 0;
// Configure a temporary buffer for the incoming data
char *data_recv = (char *) malloc(BUF_SIZE_RECV);
uint8_t *data_recv_DELIMITER = (uint8_t *) malloc(BUF_SIZE_RECV_DELIMITER);
uint8_t *data_recv_RECV_OK = (uint8_t *) malloc(BUF_SIZE_RECV_RECV_OK);
char *data_command = (char *) malloc(BUF_SIZE);
// char *data_send = (char *) malloc(BUF_SIZE);
uint8_t data_send_length = 0;
uint32_t checksum = 0;
// static const uint8_t OK_DELIMITER[2] = {0x4F, 0x4B}; //OK
static const char return_ok[] = "OK";
// static const uint8_t DELIMITER = {0x3E}; //>
static const char DELIMITER[] = ">";
static const uint8_t test_demo[10] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09}; // RECV OK
static const char return_ok_and_input_sign[] = "OKrn>"; //4f 4b 0d 0a 3e
static const char return_recv_ok[] = "RECV OK"; // RECV OK
static const char return_custota[] = "CUSTOTA"; // RECV OK
char *ret;
int recv_data_len;
int len = 0;
#if 0 //test
to_read = READ_BIN_MIN(bin_flash_length, sizeof(flash_read_data));
read = spi_flash_read(offset, flash_read_data, to_read);
if(read != ESP_OK) {
// printf("read flash fail!n");
} else {
for(int data = 0; data < to_read; data++) {
// printf("%02x ", flash_read_data[data]);
checksum += flash_read_data[data];
// printf("%d,%d ",data,checksum);
}
// printf("rn");
}
vTaskDelay(100);
// uart_write_bytes(UART_NUM_1, (const char *) "--rn", strlen("--rn"));
// data_send_length = snprintf(data_command, BUF_SIZE, "AT+OTA=%d,%d,%d,%drn", bin_flash_length, offset, to_read, checksum);
data_send_length = snprintf(data_command, BUF_SIZE, "AT+CUSTOTA=%d,%d,%d,%drn", bin_flash_length, to_read, bin_offset, checksum);
len = uart_write_bytes(UART_NUM_1, (const char *) "ATrn", strlen("ATrn"));
vTaskDelay(10);
len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
printf("%.*s", len, data_command);
int times = 0;
while (1) {
// len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
printf("times:%drn", times++);
len = uart_read_bytes(UART_NUM_1, (const char *) data_recv, BUF_SIZE, 20 / portTICK_RATE_MS);
if (len > 0) {
printf("%.*srn", len, data_recv);
for(int i=0; i<len; i++){
printf("%02x ", data_recv[i]);
}
if(data_recv != NULL) {
ret = strstr(data_recv, return_ok_and_input_sign);
if (ret != NULL) {
// printf("ret:%srn", ret);
break;
}
}
}
}
#endif
#if 1
// len = uart_write_bytes(UART_NUM_1, (const char *) "ATrn", strlen("ATrn"));
while(bin_flash_length > 0) {
vTaskDelay(10);
checksum = 0;
to_read = READ_BIN_MIN(bin_flash_length, sizeof(flash_read_data));
read = spi_flash_read(offset, flash_read_data, to_read);
if(read != ESP_OK) {
printf("read flash fail!n");
}
// checksum calculation
for(int data = 0; data < to_read; data++) {
// printf("%02x ", flash_read_data[data]);
checksum += flash_read_data[data];
}
data_send_length = snprintf(data_command, BUF_SIZE, "AT+CUSTOTA=%d,%d,%d,%drn",
s_bin_flash_length, to_read, bin_offset, checksum);
// data_send_length = snprintf(data_command, BUF_SIZE, "AT+CUSTOTA=10000,10,0,45rn");
len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
printf("data_command:%.*s", len, data_command);
while (1) {
// len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
len = uart_read_bytes(UART_NUM_1, (const char *) data_recv, BUF_SIZE, 20 / portTICK_RATE_MS);
if (len > 0) {
printf("%.*srn", len, data_recv);
//return value debug info
// for(int i=0; i<len; i++){
// printf("%02x ", data_recv[i]);
// }
if(data_recv != NULL) {
ret = strstr(data_recv, return_ok_and_input_sign);
if (ret != NULL) {
// printf("return_OK_<_success!rn");test_demo
len = uart_write_bytes(UART_NUM_1, (const char *)flash_read_data, to_read);
// len = uart_write_bytes(UART_NUM_1, (const char *)test_demo, 10);
break;
}
}
}
}
// len = uart_write_bytes(UART_NUM_1, (const char *)flash_read_data, to_read);
//debug info
// {
// for(int i = 0; i < to_read; i++) {
// printf("%02x %d ", flash_read_data[i], i);
// }
// printf("rn");
// }
while (1) {
// len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
len = uart_read_bytes(UART_NUM_1, (const char *) data_recv, BUF_SIZE, 20 / portTICK_RATE_MS);
if (len > 0) {
printf("%.*srn", len, data_recv);
//return value debug
// for(int i=0; i<len; i++){
// printf("%02x ", data_recv[i]);
// }
if(data_recv != NULL) {
ret = strstr(data_recv, return_recv_ok);
if (ret != NULL) {
printf("return_recv_ok success!rn");
break;
}
}
}
}
bin_flash_length -= to_read;
offset += to_read;
bin_offset += to_read;
}
while (1) {
// len = uart_write_bytes(UART_NUM_1, (const char *) data_command, data_send_length);
len = uart_read_bytes(UART_NUM_1, (const char *) data_recv, BUF_SIZE, 20 / portTICK_RATE_MS);
if (len > 0) {
printf("%.*srn", len, data_recv);
//return value debug info
// for(int i=0; i<len; i++){
// printf("%02x ", data_recv[i]);
// }
if(data_recv != NULL) {
ret = strstr(data_recv, return_custota);
if (ret != NULL) {
printf("custota:success!rn");
break;
}
}
}
}
#endif
// // printf("AT+OTA==OK!n");
free(data_command);
free(data_recv);
while (1) {
vTaskDelay(10);
}
}
void app_main()
{
xTaskCreate(echo_task, "uart_echo_task", 8192, NULL, 10, NULL);
}
最后
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