Added NTC external temperature sensor support

m20/Core/Inc/config.h

@@ -17,7 +17,7 @@
 #define QRG_FSK4 435100000      // Frequency fo horus modulation (in Hz)
 
 #define PA_FSK4 10              // RF power setting for horus transmission values 0-63
-#define RF_BOOST_ACTIVE 0       // RF booster enabled for transmissions about 15dB gain, but more power consumed - normally should be ON(1).
+#define RF_BOOST_ACTIVE 1       // RF booster enabled for transmissions about 15dB gain, but more power consumed - normally should be ON(1).
 
 #define ADF_FREQ_CORRECTION 19  // correction of frequency from crystal inaccuracy in 270Hz steps. To be individually set for each sonde.
 
@@ -36,6 +36,11 @@
 #define SCRAMBLER
 /*-----------------------*/
 
+/* NTC settings */
+#define NTC_GPIO_Port NTC_36K_GPIO_Port // resistor select
+#define NTC_Pin NTC_36K_Pin
+/*--------------*/
+
 /* GPS configuration */
 #define AscentRateTime 10       // Time of ascent rate mesure
 

m20/Core/Inc/main.h

@@ -84,6 +84,8 @@ void main_loop(void);
 #define LED_GPIO_Port GPIOC
 #define LPS_CS_Pin LL_GPIO_PIN_4
 #define LPS_CS_GPIO_Port GPIOA
+#define NTC_ADC_Pin LL_GPIO_PIN_4
+#define NTC_ADC_GPIO_Port GPIOC
 #define BAT_ADC_Pin LL_GPIO_PIN_0
 #define BAT_ADC_GPIO_Port GPIOB
 #define RF_Boost_Pin LL_GPIO_PIN_12
@@ -104,6 +106,14 @@ void main_loop(void);
 #define POWER_ON_GPIO_Port GPIOA
 #define ADF_CE_Pin LL_GPIO_PIN_3
 #define ADF_CE_GPIO_Port GPIOB
+#define NTC_475K_Pin LL_GPIO_PIN_4
+#define NTC_475K_GPIO_Port GPIOB
+#define NTC_36K_Pin LL_GPIO_PIN_5
+#define NTC_36K_GPIO_Port GPIOB
+#define NTC_12K_Pin LL_GPIO_PIN_6
+#define NTC_12K_GPIO_Port GPIOB
+#define NTC_330K_Pin LL_GPIO_PIN_9
+#define NTC_330K_GPIO_Port GPIOB
 #ifndef NVIC_PRIORITYGROUP_0
 #define NVIC_PRIORITYGROUP_0         ((uint32_t)0x00000007) /*!< 0 bit  for pre-emption priority,
                                                                  4 bits for subpriority */

m20/Core/Src/horus.c

@@ -1,6 +1,6 @@
 /*
  *  horus.c
- *  Based onhttps://github.com/whallmann/RS41HUP_V2/blob/master/horus_l2.c
+ *  Based on https://github.com/whallmann/RS41HUP_V2/blob/master/horus_l2.c
  *  Adapted by SQ2IPS
  */
 
@@ -60,7 +60,6 @@ void interleave(unsigned char *inout, int nbytes, int dir)
        nearest prime to nbits.  It also uses storage, is run on every call,
        and has an upper limit.  Oh Well, still seems to interleave OK. */
     i = 1;
-    uint16_t imax = sizeof(primes)/sizeof(uint16_t);
     while ((primes[i] < nbits) && (i < 77))
         i++;
     b = primes[i-1];

m20/Makefile

@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [4.5.0-RC5] date: [Tue Feb 25 13:01:11 CET 2025] 
+# File automatically-generated by tool: [projectgenerator] version: [4.5.0-RC5] date: [Wed Mar 05 19:56:45 CET 2025] 
 ##########################################################################################################################
 
 # ------------------------------------------------

m20/m20.ioc

@@ -1,4 +1,7 @@
 #MicroXplorer Configuration settings - do not modify
+ADC.ContinuousConvMode=DISABLE
+ADC.IPParameters=ContinuousConvMode,Overrun
+ADC.Overrun=ADC_OVR_DATA_OVERWRITTEN
 CAD.formats=[]
 CAD.pinconfig=Dual
 CAD.provider=
@@ -31,32 +34,37 @@ Mcu.Name=STM32L051R(6-8)Tx
 Mcu.Package=LQFP64
 Mcu.Pin0=PC13
 Mcu.Pin1=PC14-OSC32_IN
-Mcu.Pin10=PB13
-Mcu.Pin11=PB14
-Mcu.Pin12=PB15
-Mcu.Pin13=PC7
-Mcu.Pin14=PC8
-Mcu.Pin15=PC9
-Mcu.Pin16=PA8
-Mcu.Pin17=PA9
-Mcu.Pin18=PA10
-Mcu.Pin19=PA12
+Mcu.Pin10=PB12
+Mcu.Pin11=PB13
+Mcu.Pin12=PB14
+Mcu.Pin13=PB15
+Mcu.Pin14=PC7
+Mcu.Pin15=PC8
+Mcu.Pin16=PC9
+Mcu.Pin17=PA8
+Mcu.Pin18=PA9
+Mcu.Pin19=PA10
 Mcu.Pin2=PH0-OSC_IN
-Mcu.Pin20=PC10
-Mcu.Pin21=PC11
-Mcu.Pin22=PB3
-Mcu.Pin23=VP_IWDG_VS_IWDG
-Mcu.Pin24=VP_SYS_VS_Systick
-Mcu.Pin25=VP_TIM2_VS_ClockSourceINT
-Mcu.Pin26=VP_TIM22_VS_ClockSourceINT
+Mcu.Pin20=PA12
+Mcu.Pin21=PC10
+Mcu.Pin22=PC11
+Mcu.Pin23=PB3
+Mcu.Pin24=PB4
+Mcu.Pin25=PB5
+Mcu.Pin26=PB6
+Mcu.Pin27=PB9
+Mcu.Pin28=VP_IWDG_VS_IWDG
+Mcu.Pin29=VP_SYS_VS_Systick
 Mcu.Pin3=PH1-OSC_OUT
+Mcu.Pin30=VP_TIM2_VS_ClockSourceINT
+Mcu.Pin31=VP_TIM22_VS_ClockSourceINT
 Mcu.Pin4=PA4
 Mcu.Pin5=PA5
 Mcu.Pin6=PA6
 Mcu.Pin7=PA7
-Mcu.Pin8=PB0
-Mcu.Pin9=PB12
-Mcu.PinsNb=27
+Mcu.Pin8=PC4
+Mcu.Pin9=PB0
+Mcu.PinsNb=32
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32L051R6Tx
@@ -124,6 +132,30 @@ PB3.GPIOParameters=GPIO_Label
 PB3.GPIO_Label=ADF_CE
 PB3.Locked=true
 PB3.Signal=GPIO_Output
+PB4.GPIOParameters=GPIO_PuPd,GPIO_Label,GPIO_ModeDefaultOutputPP
+PB4.GPIO_Label=NTC_475K
+PB4.GPIO_ModeDefaultOutputPP=GPIO_MODE_OUTPUT_PP
+PB4.GPIO_PuPd=GPIO_NOPULL
+PB4.Locked=true
+PB4.Signal=GPIO_Output
+PB5.GPIOParameters=GPIO_PuPd,GPIO_Label,GPIO_ModeDefaultOutputPP
+PB5.GPIO_Label=NTC_36K
+PB5.GPIO_ModeDefaultOutputPP=GPIO_MODE_OUTPUT_PP
+PB5.GPIO_PuPd=GPIO_NOPULL
+PB5.Locked=true
+PB5.Signal=GPIO_Output
+PB6.GPIOParameters=GPIO_PuPd,GPIO_Label,GPIO_ModeDefaultOutputPP
+PB6.GPIO_Label=NTC_12K
+PB6.GPIO_ModeDefaultOutputPP=GPIO_MODE_OUTPUT_PP
+PB6.GPIO_PuPd=GPIO_NOPULL
+PB6.Locked=true
+PB6.Signal=GPIO_Output
+PB9.GPIOParameters=GPIO_PuPd,GPIO_Label,GPIO_ModeDefaultOutputPP
+PB9.GPIO_Label=NTC_330K
+PB9.GPIO_ModeDefaultOutputPP=GPIO_MODE_OUTPUT_PP
+PB9.GPIO_PuPd=GPIO_NOPULL
+PB9.Locked=true
+PB9.Signal=GPIO_Output
 PC10.Locked=true
 PC10.Mode=Asynchronous
 PC10.Signal=LPUART1_TX
@@ -138,6 +170,11 @@ PC14-OSC32_IN.GPIOParameters=GPIO_Label
 PC14-OSC32_IN.GPIO_Label=LED
 PC14-OSC32_IN.Locked=true
 PC14-OSC32_IN.Signal=GPIO_Output
+PC4.GPIOParameters=GPIO_Label
+PC4.GPIO_Label=NTC_ADC
+PC4.Locked=true
+PC4.Mode=IN14
+PC4.Signal=ADC_IN14
 PC7.GPIOParameters=GPIO_Label
 PC7.GPIO_Label=ADF_CLK
 PC7.Locked=true