119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/**************************************************************************//**
|
|
*
|
|
* @copyright (C) 2019 Nuvoton Technology Corp. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2020-12-12 Wayne First version
|
|
*
|
|
******************************************************************************/
|
|
|
|
#include <rtconfig.h>
|
|
#include <rtdevice.h>
|
|
|
|
#if defined(RT_USING_PIN)
|
|
#include <drv_gpio.h>
|
|
|
|
/* defined the INDICATOR_LED pin: PH2 */
|
|
#define INDICATOR_LED NU_GET_PININDEX(NU_PH, 2)
|
|
|
|
|
|
#define MATRIX_COL_NUM 2
|
|
#define MATRIX_ROW_NUM 3
|
|
|
|
/* defined the KEY_COl_0 pin: PB4 */
|
|
#define KEY_COL_0 NU_GET_PININDEX(NU_PB, 4)
|
|
|
|
/* defined the KEY_COl_1 pin: PB5 */
|
|
#define KEY_COL_1 NU_GET_PININDEX(NU_PB, 5)
|
|
|
|
/* defined the KEY_ROW_0 pin: PF10 */
|
|
#define KEY_ROW_0 NU_GET_PININDEX(NU_PF, 10)
|
|
|
|
/* defined the KEY_ROW_1 pin: PE15 */
|
|
#define KEY_ROW_1 NU_GET_PININDEX(NU_PE, 15)
|
|
|
|
/* defined the KEY_ROW_2 pin: PE14 */
|
|
#define KEY_ROW_2 NU_GET_PININDEX(NU_PE, 14)
|
|
|
|
uint32_t au32KeyMatrix_Col[MATRIX_COL_NUM] = { KEY_COL_0, KEY_COL_1 };
|
|
uint32_t au32KeyMatrix_Row[MATRIX_ROW_NUM] = { KEY_ROW_0, KEY_ROW_1, KEY_ROW_2 };
|
|
|
|
const char *szKeyLabel[] =
|
|
{
|
|
"K1",
|
|
"K2",
|
|
"K3",
|
|
"K4",
|
|
"K5",
|
|
"K6"
|
|
};
|
|
|
|
static void nu_key_matrix_cb(void *args)
|
|
{
|
|
uint32_t ri = (uint32_t)args;
|
|
int ci;
|
|
for (ci = 0; ci < MATRIX_COL_NUM; ci++)
|
|
{
|
|
/* Find column bit is low. */
|
|
if (!rt_pin_read(au32KeyMatrix_Col[ci]))
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
rt_kprintf("[%d %d] Pressed %s button.\n", ci, ri, szKeyLabel[(ci) + MATRIX_COL_NUM * ri]);
|
|
}
|
|
|
|
static void nu_key_matrix_switch(uint32_t counter)
|
|
{
|
|
int i;
|
|
for (i = 0; i < MATRIX_COL_NUM; i++)
|
|
{
|
|
/* set pin value to high */
|
|
rt_pin_write(au32KeyMatrix_Col[i], PIN_HIGH);
|
|
}
|
|
/* set pin value to low */
|
|
rt_pin_write(au32KeyMatrix_Col[counter % MATRIX_COL_NUM], PIN_LOW);
|
|
}
|
|
#endif
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
#if defined(RT_USING_PIN)
|
|
uint32_t counter = 1;
|
|
int i = 0;
|
|
|
|
for (i = 0; i < MATRIX_ROW_NUM; i++)
|
|
{
|
|
/* set pin mode to input */
|
|
rt_pin_mode(au32KeyMatrix_Row[i], PIN_MODE_INPUT_PULLUP);
|
|
|
|
rt_pin_attach_irq(au32KeyMatrix_Row[i], PIN_IRQ_MODE_FALLING, nu_key_matrix_cb, (void *)i);
|
|
rt_pin_irq_enable(au32KeyMatrix_Row[i], PIN_IRQ_ENABLE);
|
|
}
|
|
|
|
for (i = 0; i < MATRIX_COL_NUM; i++)
|
|
{
|
|
/* set pin mode to output */
|
|
rt_pin_mode(au32KeyMatrix_Col[i], PIN_MODE_OUTPUT);
|
|
}
|
|
|
|
/* set INDICATOR_LED pin mode to output */
|
|
rt_pin_mode(INDICATOR_LED, PIN_MODE_OUTPUT);
|
|
|
|
/* Toggle column pins in key matrix. */
|
|
while (counter++ > 0)
|
|
{
|
|
rt_pin_write(INDICATOR_LED, PIN_HIGH);
|
|
rt_thread_mdelay(200);
|
|
rt_pin_write(INDICATOR_LED, PIN_LOW);
|
|
rt_thread_mdelay(200);
|
|
nu_key_matrix_switch(counter);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|