short pulses when enabling VAA to avoid a big voltage glitch

doyke · Jan 28, 2018 · 5d66671 · 5d66671
1 parent b095c53
commit 5d66671
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/firmware/common/hackrf_core.c b/firmware/common/hackrf_core.c
@@ -952,6 +952,13 @@ void disable_1v8_power(void) {
 
 #ifdef HACKRF_ONE
 void enable_rf_power(void) {
+	uint32_t i;
+
+	/* many short pulses to avoid one big voltage glitch */
+	for (i = 0; i < 1000; i++) {
+		gpio_clear(&gpio_vaa_disable);
+		gpio_set(&gpio_vaa_disable);
+	}
 	gpio_clear(&gpio_vaa_disable);
 }