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Cleanup 3rd party samples; update README.md; add some missing copyright, fix builds for boards without certain pin definitions

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This commit is contained in:
Graham Sanderson
2021-10-28 14:56:05 -05:00
committed by GitHub
parent 1300621684
commit fa09f2c88e
16 changed files with 111 additions and 117 deletions
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32
pio/ir_nec/ir_loopback/ir_loopback.c
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@@ -25,43 +25,37 @@ int main() {
uint rx_gpio = 15; // choose which GPIO pin is connected to the IR detector
// configure and enable the state machines
//
int tx_sm = nec_tx_init (pio, tx_gpio); // uses two state machines, 16 instructions and one IRQ
int rx_sm = nec_rx_init (pio, rx_gpio); // uses one state machine and 9 instructions
int tx_sm = nec_tx_init(pio, tx_gpio); // uses two state machines, 16 instructions and one IRQ
int rx_sm = nec_rx_init(pio, rx_gpio); // uses one state machine and 9 instructions
if (tx_sm == -1 || rx_sm == -1) {
printf ("could not configure PIO\n");
printf("could not configure PIO\n");
return -1;
}
// transmit and receive frames
//
uint8_t tx_address = 0x00, tx_data = 0x00, rx_address, rx_data;
while (true) {
// create a 32-bit frame and add it to the transmit FIFO
//
uint32_t tx_frame = nec_encode_frame (tx_address, tx_data);
pio_sm_put (pio, tx_sm, tx_frame);
printf ("\nsent: %02x, %02x", tx_address, tx_data);
uint32_t tx_frame = nec_encode_frame(tx_address, tx_data);
pio_sm_put(pio, tx_sm, tx_frame);
printf("\nsent: %02x, %02x", tx_address, tx_data);
// allow time for the frame to be transmitted (optional)
//
sleep_ms (100);
sleep_ms(100);
// display any frames in the receive FIFO
//
while (!pio_sm_is_rx_fifo_empty (pio, rx_sm)) {
uint32_t rx_frame = pio_sm_get (pio, rx_sm);
while (!pio_sm_is_rx_fifo_empty(pio, rx_sm)) {
uint32_t rx_frame = pio_sm_get(pio, rx_sm);
if (nec_decode_frame (rx_frame, &rx_address, &rx_data)) {
printf ("\treceived: %02x, %02x", rx_address, rx_data);
if (nec_decode_frame(rx_frame, &rx_address, &rx_data)) {
printf("\treceived: %02x, %02x", rx_address, rx_data);
} else {
printf ("\treceived: %08x", rx_frame);
printf("\treceived: %08x", rx_frame);
}
}
sleep_ms (900);
sleep_ms(900);
tx_data += 1;
}
}