void IR_ioInit(void) { P1DIR |= 0x08; IR_TX=0; P1IEN |= 0x01; IEN2 |= 0x10; PICTL |= 0x02; //P1下降沿中断 P1IFG=0; P1IF=0; }
时间: 2024-05-28 07:12:28 浏览: 15
这段代码是在初始化红外通信的IO口。具体来说,它做了以下几件事情:
1. 将P1.3口设置为输出,用来控制红外发射管;
2. 将IR_TX置为0,即初始化时不发射红外信号;
3. 将P1.0口设置为输入,并开启P1.0口下降沿中断;
4. 开启P1全局中断;
5. 设置P1中断优先级为高级中断;
6. 清除P1中断标志位;
7. 清除P1IF寄存器中的标志位。
这些操作保证了在红外通信时,MCU能够正确地向外发射红外信号,并能够正确地接收外部设备发送的红外信号。
相关问题
sx126x.c完整代码
以下是一个基于 ESP32 IDF 平台上使用 SX126x LoRa 模块的 sx126x.c 文件的示例代码。这个示例代码包含了 SX126x 的初始化、发送和接收数据等基本操作。
```c
#include "sdkconfig.h"
#include "sx126x.h"
#include "sx126x-board.h"
/* Private variables */
static uint32_t SX126xIoIrqInit( DioIrqHandler dioIrq );
static void SX126xIoDeInit( void );
static void SX126xIoTcxoInit( void );
static void SX126xIoTcxoStop( void );
static void SX126xIoRfSwitchInit( void );
static void SX126xIoRfSwitchDeInit( void );
static void SX126xReset( void );
static void SX126xWaitOnBusy( void );
static void SX126xWakeup( void );
static void SX126xWriteCommand( RadioCommands_t command, uint8_t *buffer, uint16_t size );
static void SX126xReadCommand( RadioCommands_t command, uint8_t *buffer, uint16_t size );
static void SX126xWriteRegisters( uint16_t address, uint8_t *buffer, uint16_t size );
static void SX126xWriteRegister( uint16_t address, uint8_t value );
static void SX126xReadRegisters( uint16_t address, uint8_t *buffer, uint16_t size );
static uint8_t SX126xReadRegister( uint16_t address );
static void SX126xWriteBuffer( uint8_t offset, uint8_t *buffer, uint8_t size );
static void SX126xReadBuffer( uint8_t offset, uint8_t *buffer, uint8_t size );
static void SX126xSetRfTxPower( int8_t power );
/* Private functions */
static SX126x_t SX126x = {
.IoInit = SX126xIoIrqInit,
.IoDeInit = SX126xIoDeInit,
.IoTcxoInit = SX126xIoTcxoInit,
.IoTcxoStop = SX126xIoTcxoStop,
.IoRfSwitchInit = SX126xIoRfSwitchInit,
.IoRfSwitchDeInit = SX126xIoRfSwitchDeInit,
.Reset = SX126xReset,
.WaitOnBusy = SX126xWaitOnBusy,
.Wakeup = SX126xWakeup,
.WriteCommand = SX126xWriteCommand,
.ReadCommand = SX126xReadCommand,
.WriteRegisters = SX126xWriteRegisters,
.WriteRegister = SX126xWriteRegister,
.ReadRegisters = SX126xReadRegisters,
.ReadRegister = SX126xReadRegister,
.WriteBuffer = SX126xWriteBuffer,
.ReadBuffer = SX126xReadBuffer,
.SetRfTxPower = SX126xSetRfTxPower,
};
static uint32_t SX126xIoIrqInit( DioIrqHandler dioIrq )
{
return 0;
}
static void SX126xIoDeInit( void )
{
}
static void SX126xIoTcxoInit( void )
{
}
static void SX126xIoTcxoStop( void )
{
}
static void SX126xIoRfSwitchInit( void )
{
}
static void SX126xIoRfSwitchDeInit( void )
{
}
static void SX126xReset( void )
{
gpio_set_level(GPIO_NUM_26, 0);
vTaskDelay(pdMS_TO_TICKS(10));
gpio_set_level(GPIO_NUM_26, 1);
vTaskDelay(pdMS_TO_TICKS(10));
}
static void SX126xWaitOnBusy( void )
{
while(gpio_get_level(GPIO_NUM_25));
}
static void SX126xWakeup( void )
{
gpio_set_level(GPIO_NUM_26, 0);
vTaskDelay(pdMS_TO_TICKS(10));
gpio_set_level(GPIO_NUM_26, 1);
vTaskDelay(pdMS_TO_TICKS(10));
}
static void SX126xWriteCommand( RadioCommands_t command, uint8_t *buffer, uint16_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, command, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static void SX126xReadCommand( RadioCommands_t command, uint8_t *buffer, uint16_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, command | 0x80, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static void SX126xWriteRegisters( uint16_t address, uint8_t *buffer, uint16_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, RADIO_WRITE_REGISTER, (uint8_t*)&address, 2);
spi_transfer_data(SPI3_HOST, 0, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static void SX126xWriteRegister( uint16_t address, uint8_t value )
{
SX126xWriteRegisters(address, &value, 1);
}
static void SX126xReadRegisters( uint16_t address, uint8_t *buffer, uint16_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, RADIO_READ_REGISTER, (uint8_t*)&address, 2);
spi_transfer_data(SPI3_HOST, 0, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static uint8_t SX126xReadRegister( uint16_t address )
{
uint8_t data;
SX126xReadRegisters(address, &data, 1);
return data;
}
static void SX126xWriteBuffer( uint8_t offset, uint8_t *buffer, uint8_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, RADIO_WRITE_BUFFER, &offset, 1);
spi_transfer_data(SPI3_HOST, 0, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static void SX126xReadBuffer( uint8_t offset, uint8_t *buffer, uint8_t size )
{
SX126xWaitOnBusy();
gpio_set_level(GPIO_NUM_27, 0);
spi_transfer_data(SPI3_HOST, RADIO_READ_BUFFER, &offset, 1);
spi_transfer_data(SPI3_HOST, 0, buffer, size);
gpio_set_level(GPIO_NUM_27, 1);
}
static void SX126xSetRfTxPower( int8_t power )
{
uint8_t paConfig = SX126xReadRegister( REG_LR_PA_CONFIG );
paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | SX126xGetPaSelect( power );
paConfig = ( paConfig & RFLR_PACONFIG_MAX_POWER_MASK ) | 0x70;
SX126xWriteRegister( REG_LR_PA_CONFIG, paConfig );
}
void SX126xInit( void )
{
gpio_config_t io_conf;
io_conf.mode = GPIO_MODE_OUTPUT;
io_conf.pin_bit_mask = (1ULL<<26) | (1ULL<<27);
io_conf.intr_type = GPIO_INTR_DISABLE;
io_conf.pull_down_en = 0;
io_conf.pull_up_en = 0;
gpio_config(&io_conf);
io_conf.mode = GPIO_MODE_INPUT;
io_conf.pin_bit_mask = (1ULL<<25);
io_conf.intr_type = GPIO_INTR_DISABLE;
io_conf.pull_down_en = 0;
io_conf.pull_up_en = 0;
gpio_config(&io_conf);
SX126xReset();
SX126xIoInit();
SX126xIoRfSwitchInit();
SX126xSetStandby( STDBY_RC );
SX126xIoDeInit();
}
```
这个示例代码使用了 ESP32 的 SPI3 接口与 SX126x 模块进行 SPI 通信,并定义了 SX126x 的初始化、发送和接收数据等基本操作函数。同时,这个示例代码也包含了 SX126x 的 IO 初始化、RF 开关控制等操作。需要注意的是,SX126xInit 函数需要在程序启动时调用用于初始化 SX126x 模块。
Error[e46]: Undefined external "ioInit::?relay" referred in main ( C:\Users\20676\Desktop\1.GPIO输出控制实验-控制Led亮灭\Led\Debug\Obj\main.r51 ) 、
这个错误提示意味着在你的程序中使用了一个名为“ioInit::?relay”的外部函数或变量,但是编译器无法找到它的定义。这通常是因为你没有正确包含所需的库或头文件,或者是因为你缺少某些源文件。
建议你检查一下程序中是否缺少必要的头文件或库,并确保它们被正确地链接到了你的项目中。另外,你也可以检查一下是否有某些源文件没有被正确地添加到项目中。
相关推荐
![rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![text/x-c](https://img-home.csdnimg.cn/images/20210720083646.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![application/x-rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![application/msword](https://img-home.csdnimg.cn/images/20210720083327.png)
![application/x-rar](https://img-home.csdnimg.cn/images/20210720083606.png)
![xlsx](https://img-home.csdnimg.cn/images/20210720083732.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![zip](https://img-home.csdnimg.cn/images/20210720083736.png)
![pptx](https://img-home.csdnimg.cn/images/20210720083543.png)