X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fdrivers%2Fao_trng_send.c;h=7cda053d3ff2263d9bb7c89b55d6947a786b52d1;hb=2f8fce1cf6ce4bd12a836cc8ee15f4edbc95c95e;hp=85034efd767f7337ebbabbff75a428fccd6b8e73;hpb=826ad792389150ea8d80e341cb8ea023db83c9a2;p=fw%2Faltos

diff --git a/src/drivers/ao_trng_send.c b/src/drivers/ao_trng_send.c
index 85034efd..7cda053d 100644
--- a/src/drivers/ao_trng_send.c
+++ b/src/drivers/ao_trng_send.c
@@ -104,7 +104,7 @@ ao_trng_get_cooked(uint16_t *buf)
 {
 	uint16_t	i;
 	uint16_t	t;
-	uint32_t	*rnd = (uint32_t *) ao_adc_ring;
+	uint32_t	*rnd = (uint32_t *) (void *) ao_adc_ring;
 	uint8_t		mismatch = 0;
 
 	t = ao_adc_get(AO_USB_IN_SIZE) >> 1;		/* one 16-bit value per output byte */
@@ -153,10 +153,20 @@ ao_trng_send(void)
 
 	ao_crc_reset();
 
-	ao_delay(TRNG_ENABLE_DELAY);
-
 	for (s = 0; s < AO_TRNG_START_WAIT; s++) {
-		if (ao_trng_get_cooked(buffer[0]))
+		int i;
+		uint16_t	min, max;
+		uint16_t	buf[AO_USB_IN_SIZE>>1];
+
+		ao_trng_get_raw(buf);
+		min = max = buf[0];
+		for (i = 1; i < (AO_USB_IN_SIZE>>1); i++) {
+			uint16_t v = buf[i];
+			if (v < min) min = v;
+			if (v > max) max = v;
+		}
+		/* Wait for at least 10 bits of range */
+		if ((uint16_t) (max - min) >= 1024)
 			break;
 		ao_delay(AO_MS_TO_TICKS(10));
 	}