hc32l13x 4x5矩阵键盘，每个按键带灯，每个灯使用数码管一个led，给出示例代码

以下是一个简单的示例代码，它使用单片机的GPIO控制矩阵键盘上每个按键的LED灯：

#include "hc32l13x.h"

#define ROWS 4
#define COLS 5

#define KEY_PORT GPIO_PORT_2
#define KEY_ROW1_PIN GPIO_PIN_0
#define KEY_ROW2_PIN GPIO_PIN_1
#define KEY_ROW3_PIN GPIO_PIN_2
#define KEY_ROW4_PIN GPIO_PIN_3

#define LED_PORT GPIO_PORT_3
#define LED_DIGIT1_PIN GPIO_PIN_0
#define LED_DIGIT2_PIN GPIO_PIN_1
#define LED_DIGIT3_PIN GPIO_PIN_2
#define LED_DIGIT4_PIN GPIO_PIN_3
#define LED_DIGIT5_PIN GPIO_PIN_4

#define LED_OFF 1
#define LED_ON  0

/* Define the LED patterns for each key */
const uint8_t led_patterns[ROWS][COLS] = {
    {0x01, 0x02, 0x03, 0x04, 0x05},
    {0x06, 0x07, 0x08, 0x09, 0x0A},
    {0x0B, 0x0C, 0x0D, 0x0E, 0x0F},
    {0x10, 0x11, 0x12, 0x13, 0x14}
};

void init_gpio(void)
{
    /* Enable the GPIO clock */
    CLK_EnableGpioClock();

    /* Configure the row pins as input */
    GPIO_SetFunc(KEY_PORT, KEY_ROW1_PIN, GPIO_FUNC_IN_FLOAT);
    GPIO_SetFunc(KEY_PORT, KEY_ROW2_PIN, GPIO_FUNC_IN_FLOAT);
    GPIO_SetFunc(KEY_PORT, KEY_ROW3_PIN, GPIO_FUNC_IN_FLOAT);
    GPIO_SetFunc(KEY_PORT, KEY_ROW4_PIN, GPIO_FUNC_IN_FLOAT);

    /* Configure the digit pins as output */
    GPIO_SetFunc(LED_PORT, LED_DIGIT1_PIN, GPIO_FUNC_OUT_PP);
    GPIO_SetFunc(LED_PORT, LED_DIGIT2_PIN, GPIO_FUNC_OUT_PP);
    GPIO_SetFunc(LED_PORT, LED_DIGIT3_PIN, GPIO_FUNC_OUT_PP);
    GPIO_SetFunc(LED_PORT, LED_DIGIT4_PIN, GPIO_FUNC_OUT_PP);
    GPIO_SetFunc(LED_PORT, LED_DIGIT5_PIN, GPIO_FUNC_OUT_PP);
}

void set_led(uint8_t digit, uint8_t pattern)
{
    /* Set the digit pin high to enable the LED */
    switch (digit) {
        case 0:
            GPIO_SetPins(LED_PORT, LED_DIGIT1_PIN);
            break;
        case 1:
            GPIO_SetPins(LED_PORT, LED_DIGIT2_PIN);
            break;
        case 2:
            GPIO_SetPins(LED_PORT, LED_DIGIT3_PIN);
            break;
        case 3:
            GPIO_SetPins(LED_PORT, LED_DIGIT4_PIN);
            break;
        case 4:
            GPIO_SetPins(LED_PORT, LED_DIGIT5_PIN);
            break;
    }

    /* Set the LED pattern */
    if (pattern & 0x01) {
        GPIO_ResetPins(LED_PORT, GPIO_PIN_MASK_0);
    } else {
        GPIO_SetPins(LED_PORT, GPIO_PIN_MASK_0);
    }

    if (pattern & 0x02) {
        GPIO_ResetPins(LED_PORT, GPIO_PIN_MASK_1);
    } else {
        GPIO_SetPins(LED_PORT, GPIO_PIN_MASK_1);
    }

    if (pattern & 0x04) {
        GPIO_ResetPins(LED_PORT, GPIO_PIN_MASK_2);
    } else {
        GPIO_SetPins(LED_PORT, GPIO_PIN_MASK_2);
    }

    if (pattern & 0x08) {
        GPIO_ResetPins(LED_PORT, GPIO_PIN_MASK_3);
    } else {
        GPIO_SetPins(LED_PORT, GPIO_PIN_MASK_3);
    }

    if (pattern & 0x10) {
        GPIO_ResetPins(LED_PORT, GPIO_PIN_MASK_4);
    } else {
        GPIO_SetPins(LED_PORT, GPIO_PIN_MASK_4);
    }

    /* Set the digit pin low to disable the LED */
    switch (digit) {
        case 0:
            GPIO_ResetPins(LED_PORT, LED_DIGIT1_PIN);
            break;
        case 1:
            GPIO_ResetPins(LED_PORT, LED_DIGIT2_PIN);
            break;
        case 2:
            GPIO_ResetPins(LED_PORT, LED_DIGIT3_PIN);
            break;
        case 3:
            GPIO_ResetPins(LED_PORT, LED_DIGIT4_PIN);
            break;
        case 4:
            GPIO_ResetPins(LED_PORT, LED_DIGIT5_PIN);
            break;
    }
}

void main(void)
{
    /* Initialize the GPIO pins */
    init_gpio();

    while (1) {
        /* Scan the keyboard matrix */
        uint8_t row, col;
        for (row = 0; row < ROWS; row++) {
            /* Set the row pin low to enable the row */
            switch (row) {
                case 0:
                    GPIO_ResetPins(KEY_PORT, KEY_ROW1_PIN);
                    break;
                case 1:
                    GPIO_ResetPins(KEY_PORT, KEY_ROW2_PIN);
                    break;
                case 2:
                    GPIO_ResetPins(KEY_PORT, KEY_ROW3_PIN);
                    break;
                case 3:
                    GPIO_ResetPins(KEY_PORT, KEY_ROW4_PIN);
                    break;
            }

            /* Scan the columns */
            for (col = 0; col < COLS; col++) {
                /* Check if the key is pressed */
                if (GPIO_GetInput(KEY_PORT, col) == RESET) {
                    /* Turn on the LED for this key */
                    set_led(col, led_patterns[row][col]);
                } else {
                    /* Turn off the LED for this key */
                    set_led(col, LED_OFF);
                }
            }

            /* Set the row pin high to disable the row */
            switch (row) {
                case 0:
                    GPIO_SetPins(KEY_PORT, KEY_ROW1_PIN);
                    break;
                case 1:
                    GPIO_SetPins(KEY_PORT, KEY_ROW2_PIN);
                    break;
                case 2:
                    GPIO_SetPins(KEY_PORT, KEY_ROW3_PIN);
                    break;
                case 3:
                    GPIO_SetPins(KEY_PORT, KEY_ROW4_PIN);
                    break;
            }
        }
    }
}

这个代码使用了GPIO控制LED灯，并使用轮询方式扫描矩阵键盘，同时检测每个按键是否被按下，并控制LED灯的开关状态。你需要对代码进行适当的修改，以适应你的具体硬件环境和应用场景。