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