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更改协议处理部分，但是串口没反应？

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This commit is contained in:
yelvlab
2025-01-20 01:30:18 +08:00
parent b5b9d538a1
commit 6e0ec2b64e
7 changed files with 179 additions and 31 deletions
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95
src/rs485_protocol.c
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@@ -5,11 +5,24 @@
#include "rs485_protocol.h"
extern uint8_t g_temperature_uint8[2];
static uint8_t buffer_length = 0;
static int buffer_index_r = 0;
static int buffer_index_w = 0;
static int buffer_length = 0;
static char cmd_buffer[BUF_SIZE][MAX_CMD_SIZE];
static int serial_count = 0;
static uint8_t serial_char = 0x00;
static packet_state state = PS_NULL;
static packet_state_t packet_state = PS_NULL;
static char *strchr_pointer = NULL;
bool code_seen(char code) {
strchr_pointer = strchr(cmd_buffer[buffer_index_r], code);
return (strchr_pointer != NULL); //Return True if a character was found
}
float code_value(void)
{
return (strtod(&cmd_buffer[buffer_index_r][strchr_pointer - cmd_buffer[buffer_index_r] + 1], NULL));
}
// void process_command(uint8_t *cmd, size_t length) {
// char combined_str[3];
@@ -134,19 +147,91 @@ void process_printer(void) {
}
if(buffer_length) {
process_command();
buffer_length = (buffer_length -1);
buffer_index_r = (buffer_index_r + 1) % BUF_SIZE;
}
}
void get_command (void) {
static uint8_t testchar=0;
static uint8_t check_sum = 0;
static uint8_t packet_len ;
static uint8_t packet_type;
state = PS_NULL;
packet_state = PS_NULL;
serial_count = 0;
serial_char=0;
if(uart_available() > 0)
delay_ms(5);
while(uart_available() > 0 && buffer_length < BUF_SIZE) {
delay_us(100);
serial_char = uart_read();
switch (packet_state) {
case PS_NULL:
if (serial_char == PACKET_START_BYTE) {
serial_count = 0;
check_sum = 0;
packet_state = PS_TYPE;
} else
{
serial_count = 0;
}
break;
case PS_TYPE:
packet_type = serial_char;
check_sum += serial_char;
packet_state = PS_LEN;
break;
case PS_LEN:
packet_len = serial_char;
check_sum += serial_char;
packet_state = PS_PAYLOAD;
break;
case PS_PAYLOAD:
check_sum += serial_char;
cmd_buffer[buffer_index_w][serial_count++] = serial_char;
if (serial_count == packet_len)
packet_state = PS_CRC;
break;
case PS_CRC:
packet_state = PS_NULL;
if (!serial_count || check_sum != serial_char)
{
serial_count = 0;
return;
}
cmd_buffer[buffer_index_w][serial_count] = 0; // 终止字符串
buffer_index_w = (buffer_index_w + 1) % BUF_SIZE;
buffer_length += 1;
serial_count = 0;
break;
default:
packet_state = PS_NULL;
serial_count = 0;
break;
}
}
}
void process_command(void) {
if (code_seen('M')) {
switch ((int) code_value()) {
case 1:
// ultrasonic_distance_report();
printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xF1);
break;
case 2:
// gd60914_tempture_report();
printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xF2);
break;
case 3:
printf("%c%c%c%c%c%c", 0xB5, 0xF1, 0x02, 0x6F, 0x6B, 0xCC);
fwdgt_reset_mcu();
break;
default:
printf("%c%c%c%c%c%c%c", 0xB5, 0xF0, 0x03, 0x65, 0x72, 0x72, 0x3C);
break;
}
}
}