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Merge pull request #6099 from haukepetersen/opt_microbit_amateur

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boards/microbit: optimized microbit_matrix_init()
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Hauke Petersen 2016-11-10 15:37:04 +01:00 committed by GitHub
commit 156cd54140
1 changed files with 10 additions and 30 deletions
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40
boards/microbit/microbit/microbit.c
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@ -162,36 +162,16 @@ static void refresh(void *arg, int channel)
void microbit_matrix_init(void) void microbit_matrix_init(void)
{ {
/* initialize columns 1-9 */ /* initialize rows */
gpio_init(MICROBIT_LED_COL1, GPIO_OUT); for (int i = 0; i < ROWS_HW; i++) {
gpio_init(MICROBIT_LED_COL2, GPIO_OUT); gpio_init(rows[i], GPIO_OUT);
gpio_init(MICROBIT_LED_COL3, GPIO_OUT); gpio_clear(rows[i]);
gpio_init(MICROBIT_LED_COL4, GPIO_OUT); }
gpio_init(MICROBIT_LED_COL5, GPIO_OUT); /* initialize columns */
gpio_init(MICROBIT_LED_COL6, GPIO_OUT); for (int i = 0; i < COLS_HW; i++) {
gpio_init(MICROBIT_LED_COL7, GPIO_OUT); gpio_init(cols[i], GPIO_OUT);
gpio_init(MICROBIT_LED_COL8, GPIO_OUT); gpio_set(cols[i]);
gpio_init(MICROBIT_LED_COL9, GPIO_OUT); }
/* and rows from 1-3 */
gpio_init(MICROBIT_LED_ROW1, GPIO_OUT);
gpio_init(MICROBIT_LED_ROW2, GPIO_OUT);
gpio_init(MICROBIT_LED_ROW3, GPIO_OUT);
/* all columns are set to high */
gpio_set(MICROBIT_LED_COL1);
gpio_set(MICROBIT_LED_COL2);
gpio_set(MICROBIT_LED_COL3);
gpio_set(MICROBIT_LED_COL4);
gpio_set(MICROBIT_LED_COL5);
gpio_set(MICROBIT_LED_COL6);
gpio_set(MICROBIT_LED_COL7);
gpio_set(MICROBIT_LED_COL8);
gpio_set(MICROBIT_LED_COL9);
/* all rows are set to low */
gpio_clear(MICROBIT_LED_ROW1);
gpio_clear(MICROBIT_LED_ROW2);
gpio_clear(MICROBIT_LED_ROW3);
/* and finally initialize and start the refresh timer */ /* and finally initialize and start the refresh timer */
timer_init(TIMER_DEV(2), 1000000, refresh, NULL); timer_init(TIMER_DEV(2), 1000000, refresh, NULL);
timer_set(TIMER_DEV(2), 0, REFRESH); timer_set(TIMER_DEV(2), 0, REFRESH);