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| 1 | #include <bcm2835.h> | |
| 2 | ||
| 3 | #define IO_PIN RPI_GPIO_P1_11 | |
| 4 | #define LATCH_PIN RPI_GPIO_P1_13 | |
| 5 | #define CLOCK_PIN RPI_GPIO_P1_15 | |
| 6 | ||
| 7 | int main(int argc, char **argv) | |
| 8 | {
| |
| 9 | ||
| 10 | if (!bcm2835_init()) | |
| 11 | return 1; | |
| 12 | ||
| 13 | bcm2835_gpio_fsel(IO_PIN, BCM2835_GPIO_FSEL_OUTP); | |
| 14 | bcm2835_gpio_fsel(LATCH_PIN, BCM2835_GPIO_FSEL_OUTP); | |
| 15 | bcm2835_gpio_fsel(CLOCK_PIN, BCM2835_GPIO_FSEL_OUTP); | |
| 16 | ||
| 17 | bcm2835_gpio_write(IO_PIN, HIGH); | |
| 18 | ||
| 19 | - | bcm2835_gpio_write(IO_PIN, LOW); |
| 19 | + | |
| 20 | delay(5); | |
| 21 | bcm2835_gpio_write(CLOCK_PIN, LOW); | |
| 22 | delay(5); | |
| 23 | bcm2835_gpio_write(CLOCK_PIN, HIGH); | |
| 24 | delay(5); | |
| 25 | bcm2835_gpio_write(CLOCK_PIN, LOW); | |
| 26 | delay(5); | |
| 27 | bcm2835_gpio_write(CLOCK_PIN, HIGH); | |
| 28 | delay(5); | |
| 29 | bcm2835_gpio_write(CLOCK_PIN, LOW); | |
| 30 | delay(5); | |
| 31 | ||
| 32 | bcm2835_gpio_write(LATCH_PIN, HIGH); | |
| 33 | bcm2835_gpio_write(LATCH_PIN, LOW); | |
| 34 | ||
| 35 | return 0; | |
| 36 | } |
