+/*
+ * Read one bluetooth character.
+ * Returns AO_READ_AGAIN if no character arrives within 10ms
+ */
+
+static int
+ao_btm_getchar(void)
+{
+ int c;
+
+ ao_arch_block_interrupts();
+ while ((c = _ao_serial_btm_pollchar()) == AO_READ_AGAIN) {
+ ao_alarm(AO_MS_TO_TICKS(10));
+ c = ao_sleep(&ao_serial_btm_rx_fifo);
+ ao_clear_alarm();
+ if (c) {
+ c = AO_READ_AGAIN;
+ break;
+ }
+ }
+ ao_arch_release_interrupts();
+ return c;
+}