#include "ao.h"
-uint8_t ao_btm_enable;
+uint8_t ao_btm_running;
+uint8_t ao_btm_stdio;
+__xdata uint8_t ao_btm_connected;
+uint8_t ao_btm_chat;
+
+__xdata char ao_btm_buffer[1024];
+int ao_btm_ptr;
+
+#define AO_BTM_MAX_REPLY 16
+__xdata char ao_btm_reply[AO_BTM_MAX_REPLY];
+
extern volatile __xdata struct ao_fifo ao_usart1_rx_fifo;
+/*
+ * Read a line of data from the serial port, truncating
+ * it after a few characters.
+ */
+
+uint8_t
+ao_btm_get_line(void)
+{
+ uint8_t ao_btm_reply_len = 0;
+ char c;
+
+ for (;;) {
+
+ while ((c = ao_serial_pollchar()) != AO_READ_AGAIN) {
+ if (ao_btm_reply_len < sizeof (ao_btm_reply))
+ ao_btm_reply[ao_btm_reply_len++] = c;
+ if (ao_btm_ptr < sizeof (ao_btm_buffer))
+ ao_btm_buffer[ao_btm_ptr++] = c;
+ if (c == '\r' || c == '\n')
+ goto done;
+ }
+ for (c = 0; c < 10; c++) {
+ ao_delay(AO_MS_TO_TICKS(10));
+ if (!ao_fifo_empty(ao_usart1_rx_fifo))
+ break;
+ }
+ if (c == 10)
+ goto done;
+ }
+done:
+ for (c = ao_btm_reply_len; c < sizeof (ao_btm_reply);)
+ ao_btm_reply[c++] = '\0';
+ return ao_btm_reply_len;
+}
+
+/*
+ * Drain the serial port completely
+ */
void
-ao_btm(void)
+ao_btm_drain()
+{
+ while (ao_btm_get_line())
+ ;
+}
+
+void
+ao_btm_echo(uint8_t echo)
+{
+ ao_stdios[ao_btm_stdio].echo = echo;
+}
+
+/*
+ * A command line pre-processor to detect connect/disconnect messages
+ * and update the internal state
+ */
+
+uint8_t
+ao_cmd_filter(void)
+{
+ ao_cmd_lex();
+ while (ao_cmd_lex_c != '\n') {
+ if (ao_match_word("CONNECT")) {
+ ao_btm_connected = 1;
+ ao_btm_echo(1);
+ ao_wakeup(&ao_btm_connected);
+ return 1;
+ }
+ if (ao_match_word("DISCONNECT")) {
+ ao_btm_connected = 0;
+ ao_btm_echo(0);
+ ao_wakeup(&ao_btm_connected);
+ return 1;
+ }
+ if (ao_match_word("ERROR"))
+ return 1;
+ if (ao_match_word("OK"))
+ return 1;
+ ao_cmd_lex();
+ }
+ ao_cmd_status = 0;
+ return !ao_btm_connected;
+}
+
+/*
+ * A wrapper for ao_serial_pollchar that
+ * doesn't return any characters while we're
+ * initializing the bluetooth device
+ */
+char
+ao_btm_pollchar(void)
{
char c;
- while (ao_btm_enable) {
- c = ao_serial_pollchar();
- if (c != AO_READ_AGAIN)
- ao_usb_putchar(c);
- else {
- ao_usb_flush();
- ao_sleep(&ao_usart1_rx_fifo);
+ if (!ao_btm_running)
+ return AO_READ_AGAIN;
+ c = ao_serial_pollchar();
+ if (c != AO_READ_AGAIN)
+ if (ao_btm_ptr < sizeof (ao_btm_buffer))
+ ao_btm_buffer[ao_btm_ptr++] = c;
+ return c;
+}
+
+/*
+ * Wait for the bluetooth device to return
+ * status from the previously executed command
+ */
+uint8_t
+ao_btm_wait_reply(void)
+{
+ for (;;) {
+ ao_btm_get_line();
+ if (!strcmp(ao_btm_reply, "OK"))
+ return 1;
+ if (!strcmp(ao_btm_reply, "ERROR"))
+ return -1;
+ if (ao_btm_reply[0] == '\0')
+ return 0;
+ }
+}
+
+void
+ao_btm_cmd(__code char *cmd)
+{
+ ao_cur_stdio = ao_btm_stdio;
+ printf(cmd);
+ ao_btm_wait_reply();
+}
+
+/*
+ * A thread to initialize the bluetooth device and
+ * hang around to blink the LED when connected
+ */
+void
+ao_btm(void)
+{
+ ao_serial_set_speed(AO_SERIAL_SPEED_19200);
+ ao_add_stdio(ao_btm_pollchar,
+ ao_serial_putchar,
+ NULL);
+ ao_btm_stdio = ao_num_stdios - 1;
+ ao_cur_stdio = ao_btm_stdio;
+ ao_btm_echo(0);
+ ao_btm_drain();
+ ao_delay(AO_SEC_TO_TICKS(1));
+ printf("+++");
+ ao_btm_drain();
+ ao_delay(AO_SEC_TO_TICKS(1));
+ printf("\r");
+ ao_btm_drain();
+ ao_btm_cmd("ATQ0\r");
+ ao_btm_cmd("ATE0\r");
+ ao_btm_cmd("ATH\r");
+ ao_delay(AO_SEC_TO_TICKS(1));
+ ao_btm_cmd("ATC0\r");
+ ao_btm_cmd("ATL4\r");
+ ao_serial_set_speed(AO_SERIAL_SPEED_57600);
+ ao_btm_drain();
+ printf("ATN=TeleBT-%d\r", ao_serial_number);
+ ao_btm_wait_reply();
+ ao_btm_running = 1;
+ for (;;) {
+ while (!ao_btm_connected && !ao_btm_chat)
+ ao_sleep(&ao_btm_connected);
+ if (ao_btm_chat) {
+ ao_btm_running = 0;
+ while (ao_btm_chat) {
+ char c;
+ c = ao_serial_pollchar();
+ if (c != AO_READ_AGAIN)
+ ao_usb_putchar(c);
+ else {
+ ao_usb_flush();
+ ao_sleep(&ao_usart1_rx_fifo);
+ }
+ }
+ ao_btm_running = 1;
+ }
+ while (ao_btm_connected) {
+ ao_led_for(AO_LED_GREEN, AO_MS_TO_TICKS(20));
+ ao_delay(AO_SEC_TO_TICKS(3));
}
}
- ao_exit();
}
-__xdata struct ao_task ao_btm_task;
+__xdata struct ao_task ao_btm_task;
+/*
+ * Connect directly to the bluetooth device, mostly
+ * useful for testing
+ */
static void
ao_btm_forward(void)
{
char c;
- ao_btm_enable = 1;
- flush();
- ao_add_task(&ao_btm_task, ao_btm, "btm");
+ ao_btm_chat = 1;
+ ao_wakeup(&ao_btm_connected);
+ ao_usb_flush();
while ((c = ao_usb_getchar()) != '~') {
if (c == '\n') c = '\r';
ao_serial_putchar(c);
}
- ao_btm_enable = 0;
- while (ao_btm_task.wchan) {
+ ao_btm_chat = 0;
+ while (!ao_btm_running) {
ao_wakeup(&ao_usart1_rx_fifo);
ao_delay(AO_MS_TO_TICKS(10));
}
}
+/*
+ * Dump everything received from the bluetooth device during startup
+ */
+static void
+ao_btm_dump(void)
+{
+ int i;
+
+ for (i = 0; i < ao_btm_ptr; i++)
+ putchar(ao_btm_buffer[i]);
+ putchar('\n');
+}
+
__code struct ao_cmds ao_btm_cmds[] = {
- { ao_btm_forward, "B <data>\0BTM serial link." },
+ { ao_btm_forward, "B\0BTM serial link." },
+ { ao_btm_dump, "d\0Dump btm buffer." },
{ 0, NULL },
};
-
void
ao_btm_init (void)
{
ao_serial_init();
ao_serial_set_speed(AO_SERIAL_SPEED_19200);
+ ao_add_task(&ao_btm_task, ao_btm, "bt");
ao_cmd_register(&ao_btm_cmds[0]);
}
projects / fw / altos / commitdiff