vivado sdk代码gpio
时间: 2023-07-09 22:25:13 浏览: 240
以下是使用 Vivado SDK 编写 GPIO 控制的示例代码:
```c
#include "xparameters.h"
#include "xgpio.h"
#include "xstatus.h"
#define GPIO_DEVICE_ID XPAR_AXI_GPIO_0_DEVICE_ID
#define LED_CHANNEL 1
#define BTN_CHANNEL 2
XGpio Gpio;
int init_gpio() {
int status;
status = XGpio_Initialize(&Gpio, GPIO_DEVICE_ID);
if (status != XST_SUCCESS) {
return XST_FAILURE;
}
XGpio_SetDataDirection(&Gpio, LED_CHANNEL, 0x00); // Set LED pins as output
XGpio_SetDataDirection(&Gpio, BTN_CHANNEL, 0xFF); // Set button pins as input
return XST_SUCCESS;
}
int main() {
int led_data = 0;
if (init_gpio() != XST_SUCCESS) {
return XST_FAILURE;
}
while (1) {
int btn_data = XGpio_DiscreteRead(&Gpio, BTN_CHANNEL);
if (btn_data & 0x01) { // If button 0 is pressed
led_data ^= 0x01; // Toggle LED 0
XGpio_DiscreteWrite(&Gpio, LED_CHANNEL, led_data);
while (XGpio_DiscreteRead(&Gpio, BTN_CHANNEL) & 0x01) {} // Wait until button 0 is released
}
}
return XST_SUCCESS;
}
```
该代码使用 AXI GPIO IP 核控制 FPGA 板上的 LED 和按钮。在 `init_gpio` 函数中,使用 XGpio 库初始化 GPIO IP 核并设置 LED 引脚为输出、按钮引脚为输入。在主循环中,读取按钮状态并根据按钮状态控制 LED 状态。
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