X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fao_serial.c;h=1e3ea3e39b2cd26852d30b18f5a8c5c095070f18;hp=ce11694002162ea5b70ab650c25f2c6dc14cae5f;hb=fb8f3fee6a1bab1e46d782e84405845cee2dadb4;hpb=210dbaa23cdacf3a6f2d6e23493e96ee2ac9bca7

diff --git a/src/ao_serial.c b/src/ao_serial.c
index ce116940..1e3ea3e3 100644
--- a/src/ao_serial.c
+++ b/src/ao_serial.c
@@ -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;
 }
 
@@ -69,6 +78,13 @@ ao_serial_putchar(char c) __critical
 	ao_serial_tx1_start();
 }
 
+static void
+ao_serial_drain(void) __critical
+{
+	while (!ao_fifo_empty(ao_usart1_tx_fifo))
+		ao_sleep(&ao_usart1_tx_fifo);
+}
+
 static void
 send_serial(void)
 {
@@ -79,11 +95,55 @@ send_serial(void)
 	}
 }
 
+static void
+monitor_serial(void)
+{
+	ao_cmd_hex();
+	serial_echo = ao_cmd_lex_i != 0;
+}
+
+static void
+serial_baud(void)
+{
+	ao_cmd_hex();
+	ao_serial_set_speed(ao_cmd_lex_i);
+}
+
 __code struct ao_cmds ao_serial_cmds[] = {
 	{ 'S', send_serial,		"S <data>                           Send data to serial line" },
+	{ 'M', monitor_serial,		"M <enable>                         Monitor serial data" },
+	{ 'B', serial_baud,		"B <0 = 4800, 1 = 57600>            Set serial baud rate" },
 	{ 0, send_serial, 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 +159,7 @@ 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 |