imx233/fuze+: rework lradc/adc code, add external temperature sensing(battery)

Rework code to be more useful:
- move battery channel init to lradc
- always init lradc from system (previously from adc)
- don't reserve channels for vddio, nmos or pmos
- implement external temperature sensing using current source
- use this for battery sensing on the Fuze+ (calibration needed)

Change-Id: I5f9a24b9243db7d1e6bdb16b84bc891e61d0c318

1 files changed, 2 insertions, 0 deletions

diff --git a/firmware/target/arm/imx233/system-imx233.c b/firmware/target/arm/imx233/system-imx233.c
index 63bd91998d..7519687568 100644
--- a/firmware/target/arm/imx233/system-imx233.c
+++ b/firmware/target/arm/imx233/system-imx233.c
@@ -31,6 +31,7 @@
 #include "ssp-imx233.h"
 #include "i2c-imx233.h"
 #include "dcp-imx233.h"
+#include "lradc-imx233.h"
 #include "lcd.h"
 #include "backlight-target.h"
 #include "button.h"
@@ -214,6 +215,7 @@ void system_init(void)
     imx233_dma_init();
     imx233_ssp_init();
     imx233_dcp_init();
+    imx233_lradc_init();
     imx233_i2c_init();
 #if defined(SANSA_FUZEPLUS) && !defined(BOOTLOADER)
     fmradio_i2c_init();