一、前期准备
单片机：STM32F103C8T6*2
开发环境：MDK5.14
库函数：标准库V3.5
433M模块：淘宝有售
二、实验效果
2.1 Master 初始化
2.2 Slave 初始化
2.3 Master发送，Slave接收
2.4 Slave发送，Master接收
三、驱动原理
按照文档配置，SET脚置1为配置模式，绿色灯会亮起，SET脚清零为工作模式。
需要完整工程或者有问题的请加QQ：1002521871，验证：呵呵。
四、驱动代码
4.1 Master
wireless_433m.h
#ifndef __CONF_433M_H__
#define __CONF_433M_H__
#include "stm32f10x.h"
#include "gpio.h"
#include "uart.h"
//Rate of Work
#define Rate_Defualt 0x00 //20dBm
#define Rate_1dBm 0x01
#define Rate_2dBm 0x02
#define Rate_5dBm 0x03
#define Rate_8dBm 0x04
#define Rate_11dBm 0x05
#define Rate_14dBm 0x06
#define Rate_17dBm 0x07
#define Rate_20dBm 0x08
//Baudrate
#define Buad_Default 0x00 //9600
#define Buad_1200 0x01
#define Buad_2400 0x02
#define Buad_4800 0x03
#define Buad_9600 0x04
#define Buad_19200 0x05
#define Buad_38400 0x06
#define Buad_57600 0x07
#define Buad_115200 0x08
//RF Baudrate
#define RF_Buad_Defualt 0x00 //10k bps
#define RF_Baud_500 0x01
#define RF_Baud_2400 0x02
#define RF_Baud_10000 0x03
#define RF_Baud_20000 0x04
#define RF_Baud_40000 0x05
#define RF_Baud_100000 0x06
#define RF_Baud_150000 0x07
#define RF_Baud_250000 0x08
//Serial Port Format
#define Serial_Mode_default 0x00 //8N1
#define Serial_Mode_8N1 0x01
#define Serial_Mode_8O1 0x02
#define Serial_Mode_8E1 0x03
//Frequency Band
#define Frequency_Default 0x02
#define Frequency_433M 0x00
#define Frequency_315M 0x01
#define Frequency_433M_1 0x02
#define Frequency_868M_915M 0x03
/* Master IO Definitions */
#define M_TXD_Pin GPIO_Pin_2
#define M_RXD_Pin GPIO_Pin_3
#define M_SET PAout(5)
#define M_Mode_Config M_SET = 0
#define M_Mode_Work M_SET = 1
#define M_Test_Key PAin(0)
#define RecLen 64
extern uint8_t M_RecData[RecLen];
extern uint8_t *M_pIndex;
extern uint8_t *M_pWrite;
extern uint8_t *M_pRead;
extern uint8_t M_DataLen;
extern void Wireless_433MConfiguration(void);
extern void Wireless_433MInitalized(void);
#endif
wireless_433m.c
#include "conf_433m.h"
uint8_t M_RecData[RecLen] = {0};
uint8_t *M_pIndex = M_RecData;
uint8_t *M_pWrite = M_RecData;
uint8_t *M_pRead = M_RecData;
uint8_t M_DataLen = 0;
void Wireless_433MConfiguration(void)
{
GPIO_InitTypeDef GPIO;
//Enable APB2 Bus
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
//Register IO
GPIO.GPIO_Pin = GPIO_Pin_5;
GPIO.GPIO_Speed = GPIO_Speed_50MHz;
GPIO.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_Init(GPIOA, &GPIO);
GPIO.GPIO_Pin = GPIO_Pin_0;
GPIO.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO);
M_Mode_Config;
}
void Wireless_433MInitalized(void)
{
uint8_t Wireless_433_Conf[15] = {0};
uint16_t Base_Freq = 430;
uint8_t i = 0;
uint16_t Checksum = 0;
//F8 00 00 00 28 12 34 12 34 00 00 02 B6
//0 1 2 3 4 5 6 7 8 9 10 11 12
Wireless_433_Conf[0] = 0xF8;
Wireless_433_Conf[1] = Buad_Default;
Wireless_433_Conf[2] = Rate_Defualt;
Wireless_433_Conf[3] = (uint8_t)(((434 - Base_Freq)*10) / 256);
Wireless_433_Conf[4] = (uint8_t)(((434 - Base_Freq)*10) % 256);
Wireless_433_Conf[5] = 0x11;
Wireless_433_Conf[6] = 0x11;
Wireless_433_Conf[7] = 0x22;
Wireless_433_Conf[8] = 0x22;
Wireless_433_Conf[9] = RF_Buad_Defualt;
Wireless_433_Conf[10] = Serial_Mode_default;
Wireless_433_Conf[11] = Frequency_Default;
for (i = 1; i < 12; i ++)
{
Checksum += Wireless_433_Conf[i];
}
Wireless_433_Conf[12] = (uint8_t)(Checksum % 256);
printf("Master Config Cmd: ");
for (i = 0; i < 13; i ++)
{
printf("%02X ", Wireless_433_Conf[i]);
}
printf("\r\n");
for (i = 0; i < 13; i ++)
{
USART_Send(USART2, Wireless_433_Conf[i]);
}
while(M_DataLen == 0);
printf("M_RecData: %s\r\n", M_RecData);
if (M_DataLen == 2)
{
if (M_RecData[0] == 'O' && M_RecData[1] == 'K')
printf("Config Master PASS!\r\n");
}
else if (M_DataLen == 5)
{
printf("Config Master Error!\r\n");
}
else
{
printf("DataLen = %d!\r\n", M_DataLen);
}
M_DataLen = 0;
memset(M_RecData, 0, RecLen);
M_Mode_Work;
}
4.2 Slave
wireless_433m.h
#ifndef __CONF_433M_H__
#define __CONF_433M_H__
#include "stm32f10x.h"
#include "gpio.h"
#include "uart.h"
//Rate of Work
#define Rate_Defualt 0x00 //20dBm
#define Rate_1dBm 0x01
#define Rate_2dBm 0x02
#define Rate_5dBm 0x03
#define Rate_8dBm 0x04
#define Rate_11dBm 0x05
#define Rate_14dBm 0x06
#define Rate_17dBm 0x07
#define Rate_20dBm 0x08
//Baudrate
#define Buad_Default 0x00 //9600
#define Buad_1200 0x01
#define Buad_2400 0x02
#define Buad_4800 0x03
#define Buad_9600 0x04
#define Buad_19200 0x05
#define Buad_38400 0x06
#define Buad_57600 0x07
#define Buad_115200 0x08
//RF Baudrate
#define RF_Buad_Defualt 0x00 //10k bps
#define RF_Baud_500 0x01
#define RF_Baud_2400 0x02
#define RF_Baud_10000 0x03
#define RF_Baud_20000 0x04
#define RF_Baud_40000 0x05
#define RF_Baud_100000 0x06
#define RF_Baud_150000 0x07
#define RF_Baud_250000 0x08
//Serial Port Format
#define Serial_Mode_default 0x00 //8N1
#define Serial_Mode_8N1 0x01
#define Serial_Mode_8O1 0x02
#define Serial_Mode_8E1 0x03
//Frequency Band
#define Frequency_Default 0x02
#define Frequency_433M 0x00
#define Frequency_315M 0x01
#define Frequency_433M_1 0x02
#define Frequency_868M_915M 0x03
/* Slave IO Definitions */
#define S_TXD_Pin GPIO_Pin_2
#define S_RXD_Pin GPIO_Pin_3
#define S_SET PAout(5)
#define S_Mode_Config S_SET = 0
#define S_Mode_Work S_SET = 1
#define S_Test_Key PAin(0)
#define RecLen 64
extern uint8_t S_RecData[RecLen];
extern uint8_t *S_pIndex;
extern uint8_t *S_pWrite;
extern uint8_t *S_pRead;
extern uint8_t S_DataLen;
extern void Wireless_433MConfiguration(void);
extern void Wireless_433MInitalized(void);
#endif
wireless_433.c
#include "conf_433m.h"
uint8_t S_RecData[RecLen] = {0};
uint8_t *S_pIndex = S_RecData;
uint8_t *S_pWrite = S_RecData;
uint8_t *S_pRead = S_RecData;
uint8_t S_DataLen = 0;
void Wireless_433MConfiguration(void)
{
GPIO_InitTypeDef GPIO;
//Enable APB2 Bus
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
//Register IO
GPIO.GPIO_Pin = GPIO_Pin_5;
GPIO.GPIO_Speed = GPIO_Speed_50MHz;
GPIO.GPIO_Mode = GPIO_Mode_Out_OD;
GPIO_Init(GPIOA, &GPIO);
GPIO.GPIO_Pin = GPIO_Pin_0;
GPIO.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO);
S_Mode_Config;
}
void Wireless_433MInitalized(void)
{
uint8_t Wireless_433_Conf[15] = {0};
uint16_t Base_Freq = 430;
uint8_t i = 0;
uint16_t Checksum = 0;
//F8 00 00 00 28 12 34 12 34 00 00 02 B6
//0 1 2 3 4 5 6 7 8 9 10 11 12
Wireless_433_Conf[0] = 0xF8;
Wireless_433_Conf[1] = Buad_Default;
Wireless_433_Conf[2] = Rate_Defualt;
Wireless_433_Conf[3] = (uint8_t)(((434 - Base_Freq)*10) / 256);
Wireless_433_Conf[4] = (uint8_t)(((434 - Base_Freq)*10) % 256);
Wireless_433_Conf[5] = 0x22;
Wireless_433_Conf[6] = 0x22;
Wireless_433_Conf[7] = 0x11;
Wireless_433_Conf[8] = 0x11;
Wireless_433_Conf[9] = RF_Buad_Defualt;
Wireless_433_Conf[10] = Serial_Mode_default;
Wireless_433_Conf[11] = Frequency_Default;
for (i = 1; i < 12; i ++)
{
Checksum += Wireless_433_Conf[i];
}
Wireless_433_Conf[12] = (uint8_t)(Checksum % 256);
printf("Slave Config Cmd: ");
for (i = 0; i < 13; i ++)
{
printf("%02X ", Wireless_433_Conf[i]);
}
printf("\r\n");
for (i = 0; i < 13; i ++)
{
USART_Send(USART2, Wireless_433_Conf[i]);
}
while(S_DataLen == 0);
printf("S_RecData: %s\r\n", S_RecData);
if (S_DataLen == 2)
{
if (S_RecData[0] == 'O' && S_RecData[1] == 'K')
printf("Config Slave PASS!\r\n");
}
else if (S_DataLen == 5)
{
printf("Config Slave Error!\r\n");
}
else
{
printf("DataLen = %d!\r\n", S_DataLen);
}
S_DataLen = 0;
memset(S_RecData, 0, RecLen);
S_Mode_Work;
}
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原文链接：433M串口模块无线通信（STM32），转载请注明来源！