diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/ao_74hc497.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/src/drivers/ao_74hc497.c b/src/drivers/ao_74hc497.c index 93c544c3..4c13ee71 100644 --- a/src/drivers/ao_74hc497.c +++ b/src/drivers/ao_74hc497.c @@ -28,13 +28,28 @@ ao_74hc497_read(void) { static __xdata state; ao_spi_get_bit(AO_74HC497_CS_PORT, AO_74HC497_CS_PIN, AO_74HC497_CS, AO_74HC497_SPI_BUS, AO_SPI_SPEED_FAST); - ao_spi_send(&state, 1, AO_74HC497_SPI_BUS); + ao_spi_recv(&state, 1, AO_74HC497_SPI_BUS); ao_spi_put_bit(AO_74HC497_CS_PORT, AO_74HC497_CS_PIN, AO_74HC497_CS, AO_74HC497_SPI_BUS); return state; } +static void +ao_74hc497_cmd(void) +{ + uint8_t v; + + v = ao_74hc497_read(); + printf ("Switches: 0x%02x\n", v); +} + +static const struct ao_cmds ao_74hc497_cmds[] = { + { ao_74hc497_cmd, "L\0Show 74hc497" }, + { 0, NULL } +}; + void ao_74hc497_init(void) { ao_enable_output(AO_74HC497_CS_PORT, AO_74HC497_CS_PIN, AO_74HC497_CS, 1); + ao_cmd_register(&ao_74hc497_cmds[0]); } |