src/ao_cmd: Shave off bytes from doc strings

[fw/altos] / src / ao_serial.c

diff --git a/src/ao_serial.c b/src/ao_serial.c
index ce11694002162ea5b70ab650c25f2c6dc14cae5f..dd383fca18ff141a5ffd7c0af0f923f746437eca 100644 (file)
--- a/src/ao_serial.c
+++ b/src/ao_serial.c
@@ -21,7 +21,7 @@ volatile __xdata struct ao_fifo       ao_usart1_rx_fifo;
 volatile __xdata struct ao_fifo        ao_usart1_tx_fifo;
 
 void
-ao_serial_rx1_isr(void) interrupt 3
+ao_serial_rx1_isr(void) __interrupt 3
 {
        if (!ao_fifo_full(ao_usart1_rx_fifo))
                ao_fifo_insert(ao_usart1_rx_fifo, U1DBUF);
@@ -42,7 +42,7 @@ ao_serial_tx1_start(void)
 }
 
 void
-ao_serial_tx1_isr(void) interrupt 14
+ao_serial_tx1_isr(void) __interrupt 14
 {
        UTX1IF = 0;
        ao_serial_tx1_started = 0;
@@ -50,6 +50,8 @@ ao_serial_tx1_isr(void) interrupt 14
        ao_wakeup(&ao_usart1_tx_fifo);
 }
 
+static __pdata serial_echo;
+
 char
 ao_serial_getchar(void) __critical
 {
@@ -57,6 +59,13 @@ ao_serial_getchar(void) __critical
        while (ao_fifo_empty(ao_usart1_rx_fifo))
                ao_sleep(&ao_usart1_rx_fifo);
        ao_fifo_remove(ao_usart1_rx_fifo, c);
+       if (serial_echo) {
+               printf("%02x ", ((int) c) & 0xff);
+               if (c >= ' ')
+                       putchar(c);
+               putchar('\n');
+               flush();
+       }
        return c;
 }
 
@@ -70,20 +79,52 @@ ao_serial_putchar(char c) __critical
 }
 
 static void
-send_serial(void)
+ao_serial_drain(void) __critical
 {
-       ao_cmd_white();
-       while (ao_cmd_lex_c != '\n') {
-               ao_serial_putchar(ao_cmd_lex_c);
-               ao_cmd_lex();
-       }
+       while (!ao_fifo_empty(ao_usart1_tx_fifo))
+               ao_sleep(&ao_usart1_tx_fifo);
+}
+
+static void
+monitor_serial(void)
+{
+       ao_cmd_hex();
+       serial_echo = ao_cmd_lex_i != 0;
 }
 
 __code struct ao_cmds ao_serial_cmds[] = {
-       { 'S', send_serial,             "S <data>                           Send data to serial line" },
-       { 0, send_serial, NULL },
+       { monitor_serial,               "M <enable>\0Monitor serial data" },
+       { 0, NULL },
+};
+
+static const struct {
+       uint8_t baud;
+       uint8_t gcr;
+} ao_serial_speeds[] = {
+       /* [AO_SERIAL_SPEED_4800] = */ {
+               /* .baud = */ 163,
+               /* .gcr  = */ (7 << UxGCR_BAUD_E_SHIFT) | UxGCR_ORDER_LSB
+       },
+       /* [AO_SERIAL_SPEED_9600] = */ {
+               /* .baud = */ 163,
+               /* .gcr  = */ (8 << UxGCR_BAUD_E_SHIFT) | UxGCR_ORDER_LSB
+       },
+       /* [AO_SERIAL_SPEED_57600] = */ {
+               /* .baud = */ 59,
+               /* .gcr =  */ (11 << UxGCR_BAUD_E_SHIFT) | UxGCR_ORDER_LSB
+       },
 };
 
+void
+ao_serial_set_speed(uint8_t speed)
+{
+       ao_serial_drain();
+       if (speed > AO_SERIAL_SPEED_57600)
+               return;
+       U1BAUD = ao_serial_speeds[speed].baud;
+       U1GCR = ao_serial_speeds[speed].gcr;
+}
+
 void
 ao_serial_init(void)
 {
@@ -99,8 +140,7 @@ ao_serial_init(void)
        U1CSR = (UxCSR_MODE_UART | UxCSR_RE);
 
        /* Pick a 4800 baud rate */
-       U1BAUD = 163;                           /* 4800 */
-       U1GCR = 7 << UxGCR_BAUD_E_SHIFT;        /* 4800 */
+       ao_serial_set_speed(AO_SERIAL_SPEED_4800);
 
        /* Reasonable serial parameters */
        U1UCR = (UxUCR_FLUSH |