使用stm32f103c8t6单片机开发np532 nfc模块程序
时间: 2023-07-30 21:07:07 浏览: 193
开发np532 nfc模块程序需要以下步骤:
1. 确认硬件连接:将np532 nfc模块与stm32f103c8t6单片机相连,确保连接正确。
2. 安装开发环境:需要安装Keil或者IAR等ARM开发环境,以及ST公司提供的HAL库。
3. 编写程序:在开发环境中编写程序,实现与np532 nfc模块的通信,包括初始化、寻卡、读卡、写卡等操作。
4. 调试程序:将程序下载到stm32f103c8t6单片机中,通过串口或者LCD等方式输出调试信息,查看程序是否正常运行。
下面是一个简单的示例程序,实现了初始化np532 nfc模块并读取Mifare卡片的UID:
```c
#include "stm32f1xx_hal.h"
#include "pn532.h"
PN532 pn532;
void SystemClock_Config(void);
int main(void)
{
HAL_Init();
SystemClock_Config();
pn532.begin();
uint32_t versiondata = pn532.getFirmwareVersion();
if (! versiondata) {
printf("Didn't find PN53x board\n");
while (1); // halt
}
// Got ok data, print it out!
printf("Found chip PN5%x\n", (versiondata>>24) & 0xFF);
printf("Firmware ver. %d.%d\n", (versiondata>>16) & 0xFF, (versiondata>>8) & 0xFF);
printf("Supports %d\n", versiondata & 0xFF);
uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
while (1) {
// Look for an ISO14443A card
uidLength = pn532.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength);
if (uidLength == 4) {
printf("UID:");
for (uint8_t i=0; i < uidLength; i++) {
printf(" 0x%x", uid[i]);
}
printf("\n");
}
HAL_Delay(500);
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
```
在这个例子中,我们调用了pn532.begin()函数初始化np532 nfc模块,然后通过getFirmwareVersion()函数获取版本信息。在while循环中,我们不断调用readPassiveTargetID()函数寻卡,并通过串口输出读取到的卡片UID。
需要注意的是,以上代码仅仅是示例程序,实际开发中需要根据具体情况进行修改和完善。
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