From 02fd767ab60a9957faa2bff29c62ed954abc34e7 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Tue, 19 Jan 2016 18:30:57 -0800
Subject: [PATCH] src/chaoskey-v0.1: Add HV enable support

Turn on the HV supply when the OS starts.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 src/chaoskey-v0.1/ao_chaoskey.c | 8 ++++++++
 src/chaoskey-v0.1/ao_pins.h     | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/src/chaoskey-v0.1/ao_chaoskey.c b/src/chaoskey-v0.1/ao_chaoskey.c
index 48c8bf04..c9490184 100644
--- a/src/chaoskey-v0.1/ao_chaoskey.c
+++ b/src/chaoskey-v0.1/ao_chaoskey.c
@@ -20,6 +20,12 @@
 #include <ao_crc.h>
 #include <ao_trng_send.h>
 
+static void
+ao_hv_init(void)
+{
+	ao_enable_output(AO_HV_ENABLE_PORT, AO_HV_ENABLE_BIT, AO_HV_ENABLE_PIN, 1);
+}
+
 void main(void)
 {
 	ao_led_init(LEDS_AVAILABLE);
@@ -33,6 +39,8 @@ void main(void)
 
 	ao_usb_init();
 
+	ao_hv_init();
+
 	ao_trng_send_init();
 
 	ao_led_off(AO_LED_RED);
diff --git a/src/chaoskey-v0.1/ao_pins.h b/src/chaoskey-v0.1/ao_pins.h
index 72963dba..8f3eb7b1 100644
--- a/src/chaoskey-v0.1/ao_pins.h
+++ b/src/chaoskey-v0.1/ao_pins.h
@@ -57,6 +57,11 @@
 
 #define AO_NUM_ADC		1
 
+/* HV enable */
+
+#define AO_HV_ENABLE_PORT	(&stm_gpioa)
+#define AO_HV_ENABLE_BIT	8
+
 /* CRC */
 #define AO_CRC_WIDTH	32
 #define AO_CRC_INIT	0xffffffff
-- 
2.30.2