X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Flpc%2Fao_timer_lpc.c;h=62b16318107f74fc354783ab8520390ac54d524b;hb=efc2c093819b3ec2e5743126efb76d3a9c0ad231;hp=623559ebe14c4c69127a62c381d8a1161085a945;hpb=b31c6fd153825ae5ad0fcea7189472af1a9cffff;p=fw%2Faltos

diff --git a/src/lpc/ao_timer_lpc.c b/src/lpc/ao_timer_lpc.c
index 623559eb..62b16318 100644
--- a/src/lpc/ao_timer_lpc.c
+++ b/src/lpc/ao_timer_lpc.c
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -17,17 +18,35 @@
 
 #include <ao.h>
 
-volatile __data AO_TICK_TYPE ao_tick_count;
+#define AO_SYSTICK	(AO_LPC_SYSCLK / 2)
 
-uint16_t
+volatile AO_TICK_TYPE ao_tick_count;
+
+AO_TICK_TYPE
 ao_time(void)
 {
 	return ao_tick_count;
 }
 
+uint64_t
+ao_time_ns(void)
+{
+	AO_TICK_TYPE	before, after;
+	uint32_t	cvr;
+
+	do {
+		before = ao_tick_count;
+		cvr = lpc_systick.cvr;
+		after = ao_tick_count;
+	} while (before != after);
+
+	return (uint64_t) after * (1000000000ULL / AO_HERTZ) +
+		(uint64_t) cvr * (1000000000ULL / AO_SYSTICK);
+}
+
 #if AO_DATA_ALL
-volatile __data uint8_t	ao_data_interval = 1;
-volatile __data uint8_t	ao_data_count;
+volatile uint8_t	ao_data_interval = 1;
+volatile uint8_t	ao_data_count;
 #endif
 
 void lpc_systick_isr(void)