auracaster/hci_uart_iso_timesync
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Toggle and send 'B' for each ISO TX packet

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This commit is contained in:
Matthias Ringwald
2024-11-29 11:11:41 +01:00
parent 280bfc25b4
commit 1a9c024c92
1 changed files with 25 additions and 12 deletions
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src/main.c
+25 -12
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@@ -67,6 +67,20 @@ static K_FIFO_DEFINE(uart_tx_queue);
*/
#define H4_DISCARD_LEN 33
#ifdef CONFIG_AUDIO_SYNC_TIMER_USES_RTC
#define TIMESYNC_GPIO DT_NODELABEL(timesync)
#if DT_NODE_HAS_STATUS(TIMESYNC_GPIO, okay)
static const struct gpio_dt_spec timesync_pin = GPIO_DT_SPEC_GET(TIMESYNC_GPIO, gpios);
#else
#error "No timesync gpio available!"
#endif
#define ALTERNATE_TOGGLE_GPIO DT_NODELABEL(alternate_toggle)
static const struct gpio_dt_spec alternate_toggle_pin = GPIO_DT_SPEC_GET(ALTERNATE_TOGGLE_GPIO, gpios);
#endif
static int h4_read(const struct device *uart, uint8_t *buf, size_t len)
{
int rx = uart_fifo_read(uart, buf, len);
@@ -259,6 +273,15 @@ static void tx_thread(void *p1, void *p2, void *p3)
/* Wait until a buffer is available */
buf = k_fifo_get(&tx_queue, K_FOREVER);
#if DT_NODE_HAS_STATUS(TIMESYNC_GPIO, okay)
// toggle GPIO and send 'B' for each TX packet to be able to capture by Logic Analzyer
if (bt_buf_get_type(buf) == BT_BUF_ISO_OUT) {
gpio_pin_toggle_dt( &timesync_pin );
uart_poll_out(gmap_uart_dev, 'B');
}
#endif
/* Pass buffer to the stack */
err = bt_send(buf);
if (err!=BT_HCI_ERR_SUCCESS) {
@@ -362,16 +385,6 @@ static int hci_uart_init(void)
SYS_INIT(hci_uart_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);
#ifdef CONFIG_AUDIO_SYNC_TIMER_USES_RTC
#define TIMESYNC_GPIO DT_NODELABEL(timesync)
#if DT_NODE_HAS_STATUS(TIMESYNC_GPIO, okay)
static const struct gpio_dt_spec timesync_pin = GPIO_DT_SPEC_GET(TIMESYNC_GPIO, gpios);
#else
#error "No timesync gpio available!"
#endif
#define ALTERNATE_TOGGLE_GPIO DT_NODELABEL(alternate_toggle)
static const struct gpio_dt_spec alternate_toggle_pin = GPIO_DT_SPEC_GET(ALTERNATE_TOGGLE_GPIO, gpios);
#define HCI_CMD_ISO_TIMESYNC (0x200)
@@ -473,7 +486,7 @@ static uint32_t toggle_and_get_time(void) {
#endif
#define PRESENTATION_TIME_US 10000
#define PRESENTATION_TIME_US 40070
#define SYNC_TOGGLE_TIMER_INSTANCE_NUMBER 2
static const nrfx_timer_t sync_toggle_timer_instance =
NRFX_TIMER_INSTANCE(SYNC_TOGGLE_TIMER_INSTANCE_NUMBER);
@@ -633,7 +646,7 @@ int main(void)
int32_t sdu_sync_ref_delta_us = (int32_t)(timestamp_sdu_sync_reference_us - timestamp_toggle_us);
// LOG_INF("PULSE: state %x, delta %d", alternate_toggle_state, sdu_sync_ref_delta_us);
if (alternate_toggle_state == ALTERNATE_TOGGLE_STATE_IDLE) {
if (sdu_sync_ref_delta_us < 3000) {
if ((sdu_sync_ref_delta_us < 3000) || (sdu_sync_ref_delta_us > 50000)) {
sdu_sync_ref_delta_us = 3000;
}
setup_sdu_sync_to_audio_out_timer(sdu_sync_ref_delta_us);