From d4c48f66c23fe3d7a44a75871ffe0cd3f2739274 Mon Sep 17 00:00:00 2001
From: Stefan `Sec` Zehl <sec@42.org>
Date: Mon, 1 Aug 2011 05:31:47 +0200
Subject: [PATCH] Disable nrf on lowpower-off

---
 firmware/basic/voltage.c  | 1 +
 firmware/funk/nrf24l01p.c | 7 +++++++
 firmware/funk/nrf24l01p.h | 1 +
 3 files changed, 9 insertions(+)

diff --git a/firmware/basic/voltage.c b/firmware/basic/voltage.c
index 1ed2d69..624cbf8 100644
--- a/firmware/basic/voltage.c
+++ b/firmware/basic/voltage.c
@@ -11,6 +11,7 @@ void VoltageCheck(void){
 	results /= 1024;
 
 	if( results < 3500 ){
+        nrf_off();
 	    gpioSetValue (RB_PWR_GOOD, 0); 
 	    gpioSetValue (RB_LCD_BL, 0); 
 	    SCB_SCR |= SCB_SCR_SLEEPDEEP;
diff --git a/firmware/funk/nrf24l01p.c b/firmware/funk/nrf24l01p.c
index bffaa34..8c3c464 100644
--- a/firmware/funk/nrf24l01p.c
+++ b/firmware/funk/nrf24l01p.c
@@ -395,3 +395,10 @@ void nrf_init() {
     nrf_write_reg(R_RF_SETUP,DEFAULT_SPEED|R_RF_SETUP_RF_PWR_3);
 };
 
+void nrf_off() {
+    nrf_write_reg(R_CONFIG,
+            R_CONFIG_MASK_RX_DR|
+            R_CONFIG_MASK_TX_DS|
+            R_CONFIG_MASK_MAX_RT
+            ); // Most important: no R_CONFIG_PWR_UP
+};
diff --git a/firmware/funk/nrf24l01p.h b/firmware/funk/nrf24l01p.h
index ace6122..252d747 100644
--- a/firmware/funk/nrf24l01p.h
+++ b/firmware/funk/nrf24l01p.h
@@ -138,6 +138,7 @@ int nrf_rcv_pkt_time_encr(int maxtime, int maxsize, uint8_t * pkt, uint32_t cons
 char nrf_snd_pkt_crc_encr(int size, uint8_t * pkt, uint32_t const k[4]);
 
 void nrf_init() ;
+void nrf_off() ;
 
 void nrf_cmd(uint8_t cmd);
 uint8_t nrf_cmd_status(uint8_t cmd);