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lora: lora_send blocks until completion

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Change the behaviour of `lora_send` to block until the transmission
completes. The current asynchronous behaviour is exposed through the
new function `lora_send_async`. This naming convention brings LoRa in
line with other asynchronous subsystems.

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
This commit is contained in:
Jordan Yates 2021-06-30 12:45:37 +10:00 • committed by Christopher Friedt
commit 93b4dbcc19
5 changed files with 75 additions and 4 deletions
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33
drivers/lora/sx12xx_common.c
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@ -142,17 +142,48 @@ static void sx12xx_ev_rx_done(uint8_t *payload, uint16_t size, int16_t rssi,
static void sx12xx_ev_tx_done(void)
{
struct k_poll_signal *sig = dev_data.operation_done;
modem_release(&dev_data);
/* Raise signal if provided */
if (sig) {
k_poll_signal_raise(sig, 0);
}
}
int sx12xx_lora_send(const struct device *dev, uint8_t *data,
uint32_t data_len)
{
/* Ensure available, decremented by sx12xx_ev_tx_done */
struct k_poll_signal done = K_POLL_SIGNAL_INITIALIZER(done);
struct k_poll_event evt = K_POLL_EVENT_INITIALIZER(
K_POLL_TYPE_SIGNAL,
K_POLL_MODE_NOTIFY_ONLY,
&done);
int ret;
ret = sx12xx_lora_send_async(dev, data, data_len, &done);
if (ret < 0) {
return ret;
}
/* Wait for transmission to complete */
k_poll(&evt, 1, K_FOREVER);
return 0;
}
int sx12xx_lora_send_async(const struct device *dev, uint8_t *data,
uint32_t data_len, struct k_poll_signal *async)
{
/* Ensure available, freed by sx12xx_ev_tx_done */
if (!modem_acquire(&dev_data)) {
return -EBUSY;
}
/* Store signal */
dev_data.operation_done = async;
Radio.SetMaxPayloadLength(MODEM_LORA, data_len);
Radio.Send(data, data_len);