X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fao_packet.c;h=d52f2a68b89815ee9f89896dbc874e8eed966cc2;hp=0dce326c271b56dff69abfa8e276f710836eb17e;hb=aed59e1c057c13e28fd368dc2592aa4628211097;hpb=4f7ed9ff484778381db647c27d2a34d0cadec41e

diff --git a/src/ao_packet.c b/src/ao_packet.c
index 0dce326c..d52f2a68 100644
--- a/src/ao_packet.c
+++ b/src/ao_packet.c
@@ -17,27 +17,35 @@
 
 #include "ao.h"
 
-static __xdata struct ao_packet_recv rx_packet;
-static __xdata struct ao_packet tx_packet;
+__xdata struct ao_packet_recv ao_rx_packet;
+__xdata struct ao_packet ao_tx_packet;
+__pdata uint8_t ao_packet_rx_len, ao_packet_rx_used, ao_packet_tx_used;
+
 static __xdata char tx_data[AO_PACKET_MAX];
 static __xdata char rx_data[AO_PACKET_MAX];
-static __pdata uint8_t rx_len, rx_used, tx_used;
 static __pdata uint8_t rx_seq;
 
-static __xdata struct ao_task	ao_packet_task;
-static __xdata uint8_t ao_packet_enable;
-static __xdata uint8_t ao_packet_master_sleeping;
+__xdata struct ao_task	ao_packet_task;
+__xdata uint8_t ao_packet_enable;
+__xdata uint8_t ao_packet_master_sleeping;
 
 void
 ao_packet_send(void)
 {
-	ao_config_get();
-	ao_mutex_get(&ao_radio_mutex);
-	ao_radio_idle();
+	ao_led_on(AO_LED_RED);
+	ao_radio_get();
+
+	/* If any tx data is pending then copy it into the tx packet */
+	if (ao_packet_tx_used && ao_tx_packet.len == 0) {
+		memcpy(&ao_tx_packet.d, tx_data, ao_packet_tx_used);
+		ao_tx_packet.len = ao_packet_tx_used;
+		ao_tx_packet.seq++;
+		ao_packet_tx_used = 0;
+		ao_wakeup(&tx_data);
+	}
 	ao_radio_done = 0;
-	RF_CHANNR = ao_config.radio_channel;
 	ao_dma_set_transfer(ao_radio_dma,
-			    &tx_packet,
+			    &ao_tx_packet,
 			    &RFDXADDR,
 			    sizeof (struct ao_packet),
 			    DMA_CFG0_WORDSIZE_8 |
@@ -50,7 +58,8 @@ ao_packet_send(void)
 	RFST = RFST_STX;
 	__critical while (!ao_radio_done)
 		ao_sleep(&ao_radio_done);
-	ao_mutex_put(&ao_radio_mutex);
+	ao_radio_put();
+	ao_led_off(AO_LED_RED);
 }
 
 uint8_t
@@ -58,13 +67,13 @@ ao_packet_recv(void)
 {
 	uint8_t	dma_done;
 
-	ao_config_get();
-	ao_mutex_get(&ao_radio_mutex);
-	ao_radio_idle();
-	RF_CHANNR = ao_config.radio_channel;
+#ifdef AO_LED_GREEN
+	ao_led_on(AO_LED_GREEN);
+#endif
+	ao_radio_get();
 	ao_dma_set_transfer(ao_radio_dma,
 			    &RFDXADDR,
-			    &rx_packet,
+			    &ao_rx_packet,
 			    sizeof (struct ao_packet_recv),
 			    DMA_CFG0_WORDSIZE_8 |
 			    DMA_CFG0_TMODE_SINGLE |
@@ -75,186 +84,77 @@ ao_packet_recv(void)
 	ao_dma_start(ao_radio_dma);
 	RFST = RFST_SRX;
 	__critical while (!ao_radio_dma_done)
-			   if (ao_sleep(&ao_radio_dma_done) != 0) {
-				   printf("recv timeout\n"); flush();
+			   if (ao_sleep(&ao_radio_dma_done) != 0)
 				   ao_radio_abort();
-			   }
 	dma_done = ao_radio_dma_done;
-	ao_mutex_put(&ao_radio_mutex);
+	ao_radio_put();
+#ifdef AO_LED_GREEN
+	ao_led_off(AO_LED_GREEN);
+#endif
 
 	if (dma_done & AO_DMA_DONE) {
-		if (!(rx_packet.status & PKT_APPEND_STATUS_1_CRC_OK)) {
-			printf ("bad crc\n"); flush();
+		if (!(ao_rx_packet.status & PKT_APPEND_STATUS_1_CRC_OK))
 			return AO_DMA_ABORTED;
-		}
-		if (rx_packet.packet.len == AO_PACKET_SYN) {
-			rx_seq = rx_packet.packet.seq;
-			tx_packet.seq = rx_packet.packet.ack;
-			tx_packet.ack = rx_seq;
-		} else if (rx_packet.packet.len) {
-			if (rx_packet.packet.seq == rx_seq + 1 && rx_used == rx_len)
-			{
-				printf ("rx len %3d seq %3d ack %3d\n",
-					rx_packet.packet.len,
-					rx_packet.packet.seq,
-					rx_packet.packet.ack);
-				flush();
-				memcpy(rx_data, rx_packet.packet.d, rx_packet.packet.len);
-				rx_used = 0;
-				rx_len = rx_packet.packet.len;
-				rx_seq = rx_packet.packet.seq;
-				tx_packet.ack = rx_seq;
-				ao_wakeup(&rx_data);
+		if (ao_rx_packet.packet.len == AO_PACKET_SYN) {
+			rx_seq = ao_rx_packet.packet.seq;
+			ao_tx_packet.seq = ao_rx_packet.packet.ack;
+			ao_tx_packet.ack = rx_seq;
+		} else if (ao_rx_packet.packet.len) {
+			if (ao_rx_packet.packet.seq == (uint8_t) (rx_seq + (uint8_t) 1) && ao_packet_rx_used == ao_packet_rx_len) {
+				memcpy(rx_data, ao_rx_packet.packet.d, ao_rx_packet.packet.len);
+				ao_packet_rx_used = 0;
+				ao_packet_rx_len = ao_rx_packet.packet.len;
+				rx_seq = ao_rx_packet.packet.seq;
+				ao_tx_packet.ack = rx_seq;
+				ao_wakeup(&ao_stdin_ready);
 			}
 		}
-		if (rx_packet.packet.ack == tx_packet.seq) {
-			tx_packet.len = 0;
-			ao_wakeup(&tx_packet);
+		if (ao_rx_packet.packet.ack == ao_tx_packet.seq) {
+			ao_tx_packet.len = 0;
+			ao_wakeup(&ao_tx_packet);
 		}
 	}
 	return dma_done;
 }
 
-void
-ao_packet_slave(void)
-{
-	ao_radio_set_packet();
-	tx_packet.addr = ao_serial_number;
-	tx_packet.len = AO_PACKET_SYN;
-	while (ao_packet_enable) {
-		ao_led_on(AO_LED_GREEN);
-		ao_packet_recv();
-		ao_led_off(AO_LED_GREEN);
-		ao_led_on(AO_LED_RED);
-		ao_delay(AO_MS_TO_TICKS(100));
-		ao_packet_send();
-		ao_led_off(AO_LED_RED);
-	}
-	ao_exit();
-}
-
-/* Thread for the master side of the packet link */
-
-void
-ao_packet_master(void)
-{
-	uint8_t	status;
-
-	ao_radio_set_packet();
-	tx_packet.addr = ao_serial_number;
-	tx_packet.len = AO_PACKET_SYN;
-	while (ao_packet_enable) {
-		ao_led_on(AO_LED_RED);
-		ao_delay(AO_MS_TO_TICKS(100));
-		ao_packet_send();
-		ao_led_off(AO_LED_RED);
-		ao_led_on(AO_LED_GREEN);
-		ao_alarm(AO_MS_TO_TICKS(1000));
-		status = ao_packet_recv();
-		ao_led_off(AO_LED_GREEN);
-		if (status & AO_DMA_DONE) {
-			ao_packet_master_sleeping = 1;
-			ao_delay(AO_MS_TO_TICKS(1000));
-			ao_packet_master_sleeping = 0;
-		}
-	}
-	ao_exit();
-}
+#ifndef PACKET_HAS_MASTER
+#define PACKET_HAS_MASTER 1
+#endif
 
+#if PACKET_HAS_MASTER
 void
 ao_packet_flush(void)
 {
-	if (!tx_used)
-		return;
-
-	/* Wait for previous packet to be received
-	 */
-	while (tx_packet.len)
-		ao_sleep(&tx_packet);
-
-	/* Prepare next packet
+	/* If there is data to send, and this is the master,
+	 * then poke the master to send all queued data
 	 */
-	if (tx_used) {
-		memcpy(&tx_packet.d, tx_data, tx_used);
-		tx_packet.len = tx_used;
-		tx_packet.seq++;
-		tx_used = 0;
-
-		if (ao_packet_master_sleeping)
-			ao_wake_task(&ao_packet_task);
-	}
+	if (ao_packet_tx_used && ao_packet_master_sleeping)
+		ao_wake_task(&ao_packet_task);
 }
+#endif /* PACKET_HAS_MASTER */
 
 void
-ao_packet_putchar(char c)
+ao_packet_putchar(char c) __reentrant
 {
-	while (tx_used == AO_PACKET_MAX && ao_packet_enable)
+	while (ao_packet_tx_used == AO_PACKET_MAX && ao_packet_enable) {
+#if PACKET_HAS_MASTER
 		ao_packet_flush();
+#endif
+		ao_sleep(&tx_data);
+	}
 
 	if (ao_packet_enable)
-		tx_data[tx_used++] = c;
+		tx_data[ao_packet_tx_used++] = c;
 }
 
 char
-ao_packet_getchar(void) __critical
+ao_packet_pollchar(void) __critical
 {
-	while (rx_used == rx_len && ao_packet_enable) {
-		flush();
-		ao_sleep(&rx_data);
-	}
-
 	if (!ao_packet_enable)
-		return 0;
-
-	return rx_data[rx_used++];
-}
-
-static void
-ao_packet_echo(void) __reentrant
-{
-	uint8_t	c;
-	while (ao_packet_enable) {
-		c = ao_packet_getchar();
-		if (ao_packet_enable) {
-			putchar(c);
-			if (c == (uint8_t) '\n')
-				flush();
-		}
-	}
-	ao_exit();
-}
-
-static __xdata struct ao_task	ao_packet_echo_task;
-
-static void
-ao_packet_forward(void) __reentrant
-{
-	char c;
-	ao_packet_enable = 1;
-	ao_cmd_white();
-
-	if (ao_cmd_lex_c == 'm')
-		ao_add_task(&ao_packet_task, ao_packet_master, "master");
-	else
-		ao_add_task(&ao_packet_task, ao_packet_slave, "slave");
-	ao_add_task(&ao_packet_echo_task, ao_packet_echo, "echo");
-	while ((c = getchar()) != '~')
-		ao_packet_putchar(c);
-	ao_packet_enable = 0;
-	ao_radio_abort();
-	while (ao_packet_echo_task.wchan || ao_packet_task.wchan) {
-		ao_wake_task(&ao_packet_echo_task);
-		ao_wake_task(&ao_packet_task);
-	}
-}
+		return AO_READ_AGAIN;
 
-__code struct ao_cmds ao_packet_cmds[] = {
-	{ 'p',	ao_packet_forward,	"p {m|s}                            Remote packet link. m=master, s=slave" },
-	{ 0,	ao_packet_forward,	NULL },
-};
+	if (ao_packet_rx_used == ao_packet_rx_len)
+		return AO_READ_AGAIN;
 
-void
-ao_packet_init(void)
-{
-	ao_cmd_register(&ao_packet_cmds[0]);
+	return rx_data[ao_packet_rx_used++];
 }