The extern interrupt configuration, such as EXTI from GPIO, could be roughly divided into 6 steps(take GPIO EXTI for example): Clock the peripherals: GPIO port and AFIO module Configure(Initialize) GPIO, and decide the input GPIO {port, pin, mode}. Connect the GPIO_Pin_x with the correspo...
= 0x00))*/externGPIO_TypeDef*GPIOX=GPIOA;voidGPIO_Config_Init(u32Portx,u32pin){switch(Portx){caseportA:GPIOX=GPIOA;break;caseportB:GPIOX=GPIOB;break;caseportC:GPIOX=GPIOC;break;}RCC_APB2PeriphClockCmd(Portx,ENABLE);/
It’s the easiest way in code in order to perform an analog to digital conversion using the ADC on an analog input channel. However, it’s not an efficient way in all cases as it’s considered to be a blocking way of using the ADC. As in this way, we start the A/D conversion a...
Pin_6);}else if (lkkcode == '1'){GPIO_SetBits(GPIOF,GPIO_Pin_6);}else if(lkkcode ==...
GPIO模拟协议：使用普通IO口通过位操作实现I2C通信，规避硬件缺陷。示例代码片段：void I2C_Soft_Start()...
#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */ 在对应的几个操作函数里面也有这几个设备对应的操作,但是我们只用一个spi-flash所以就只定义一个: #define SPI_FLASH 0 定义扇区大小,块大小,扇区个数 #define FLASH_SECTOR_SIZE (4*1024) ...
这种方式也称为是繁忙等待方式或轮询方式。它的缺点主要是:在进行一个I/O操作的时候，要一直占用着CPU...
Most of the GPIO pins are shared with digital or analog a rnate functions. All GPIOs a igh current- capable. The I/Os a rnate function configuration can be locked if needed following a specific sequence in order to oid spurious writing to the I/Os registers. 2.3.26 ADC (analog to ...
The code needs the NVIC enabled, the IRQ Handler, and a Card Detect GPIO signal. The aforementioned code will have issues with cards >=4GB as it handles byte addresses as 32-bit rather than using block addressing. A 2GB SD Card might be a better starting point. Tips, Buy me a ...
当备份域是由VDD (连接到VDD模拟开关) ,所提供的提供以下功能:● PC14和PC15可被用作GPIO或LSE标签● PC13可以作为GPIO ,防拆针, RTC校准时钟, RTC闹钟或第二个输出 4.1.3电压调节器电压调节器复位后始终处于启用状态。它工作在三种不同的模式根据不同的应用模式。●在运行模式下,稳压电源全功率到1.8 V (...