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-rw-r--r--ports/stm32/nimble_hci_uart.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/ports/stm32/nimble_hci_uart.c b/ports/stm32/nimble_hci_uart.c
index defda1581..69e89e6ab 100644
--- a/ports/stm32/nimble_hci_uart.c
+++ b/ports/stm32/nimble_hci_uart.c
@@ -162,7 +162,9 @@ void nimble_hci_uart_tx_strn(const char *str, uint len) {
if (mp_hal_pin_read(pyb_pin_BT_DEV_WAKE) == 1) {
//printf("BT WAKE for TX\n");
mp_hal_pin_low(pyb_pin_BT_DEV_WAKE); // wake up
- mp_hal_delay_ms(5); // can't go lower than this
+ // Use delay_us rather than delay_ms to prevent running the scheduler (which
+ // might result in more BLE operations).
+ mp_hal_delay_us(5000); // can't go lower than this
}
#endif