X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fao_serial.c;h=e9373e232cb700fd735a3a72968b04d1c787c078;hb=9f8a96a8516e13878b329dbf1da855ed9a3219c4;hp=ce11694002162ea5b70ab650c25f2c6dc14cae5f;hpb=210dbaa23cdacf3a6f2d6e23493e96ee2ac9bca7;p=fw%2Faltos

diff --git a/src/ao_serial.c b/src/ao_serial.c
index ce116940..e9373e23 100644
--- a/src/ao_serial.c
+++ b/src/ao_serial.c
@@ -20,12 +20,20 @@
 volatile __xdata struct ao_fifo	ao_usart1_rx_fifo;
 volatile __xdata struct ao_fifo	ao_usart1_tx_fifo;
 
+#if USE_SERIAL_STDIN
+__pdata uint8_t	ao_serial_stdin;
+#endif
+
 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);
 	ao_wakeup(&ao_usart1_rx_fifo);
+#if USE_SERIAL_STDIN
+	if (ao_serial_stdin)
+		ao_wakeup(&ao_stdin_ready);
+#endif
 }
 
 static __xdata uint8_t ao_serial_tx1_started;
@@ -42,7 +50,7 @@ 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;
@@ -60,6 +68,29 @@ ao_serial_getchar(void) __critical
 	return c;
 }
 
+#if USE_SERIAL_STDIN
+char
+ao_serial_pollchar(void) __critical
+{
+	char	c;
+#if 0
+	if (!ao_serial_stdin)
+		return AO_READ_AGAIN;
+#endif
+	if (ao_fifo_empty(ao_usart1_rx_fifo))
+		return AO_READ_AGAIN;
+	ao_fifo_remove(ao_usart1_rx_fifo,c);
+	return c;
+}
+
+void
+ao_serial_set_stdin(uint8_t stdin)
+{
+	ao_serial_stdin = stdin;
+}
+
+#endif
+
 void
 ao_serial_putchar(char c) __critical
 {
@@ -69,21 +100,45 @@ ao_serial_putchar(char c) __critical
 	ao_serial_tx1_start();
 }
 
-static void
-send_serial(void)
+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);
 }
 
-__code struct ao_cmds ao_serial_cmds[] = {
-	{ 'S', send_serial,		"S <data>                           Send data to serial line" },
-	{ 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_19200] = */ {
+		/* .baud = */ 163,
+		/* .gcr  = */ (9 << 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 +154,7 @@ 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 |
@@ -114,6 +168,11 @@ ao_serial_init(void)
 
 	IEN0 |= IEN0_URX1IE;
 	IEN2 |= IEN2_UTX1IE;
-
-	ao_cmd_register(&ao_serial_cmds[0]);
+#if 0
+#if USE_SERIAL_STDIN
+	ao_add_stdio(ao_serial_pollchar,
+		     ao_serial_putchar,
+		     NULL);
+#endif
+#endif
 }