From: drowe67 <drowe67@01035d8c-6547-0410-b346-abe4f91aad63>
Date: Fri, 3 Oct 2014 03:24:17 +0000 (+0000)
Subject: support for ext_ptt, compiles OKbut not tested
X-Git-Url: http://git.whiteaudio.com/gitweb/?a=commitdiff_plain;h=4065b421326a192166a5d92b75db8900621f1b6a;p=freetel-svn-tracking.git

support for ext_ptt, compiles OKbut not tested

git-svn-id: https://svn.code.sf.net/p/freetel/code@1871 01035d8c-6547-0410-b346-abe4f91aad63
---

diff --git a/codec2-dev/stm32/inc/sm1000_leds_switches.h b/codec2-dev/stm32/inc/sm1000_leds_switches.h
index c5ba8953..b98f74df 100644
--- a/codec2-dev/stm32/inc/sm1000_leds_switches.h
+++ b/codec2-dev/stm32/inc/sm1000_leds_switches.h
@@ -39,6 +39,7 @@ void not_cptt(int state);
 int switch_ptt(void);
 int switch_select(void);
 int switch_back(void);
+int ext_ptt(void);
 
 void ColorfulRingOfDeath(int code);
 
diff --git a/codec2-dev/stm32/src/sm1000_leds_switches.c b/codec2-dev/stm32/src/sm1000_leds_switches.c
index f936ca22..e630cf07 100644
--- a/codec2-dev/stm32/src/sm1000_leds_switches.c
+++ b/codec2-dev/stm32/src/sm1000_leds_switches.c
@@ -33,6 +33,7 @@
 #define SWITCH_PTT     GPIO_Pin_7
 #define SWITCH_SELECT  GPIO_Pin_0
 #define SWITCH_BACK    GPIO_Pin_1
+#define EXT_PTT        GPIO_Pin_8
 
 #include <stm32f4xx.h>
 #include <stm32f4xx_gpio.h>
@@ -47,7 +48,7 @@ void sm1000_leds_switches_init(void) {
 
     GPIO_InitStruct.GPIO_Pin = LED_PWR | LED_PTT | LED_RT | LED_ERR | _CPTT;
     GPIO_InitStruct.GPIO_Mode = GPIO_Mode_OUT; 		
-    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; 	
+    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_2MHz; 	
     GPIO_InitStruct.GPIO_OType = GPIO_OType_PP; 	 
     GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL; 	
     GPIO_Init(GPIOD, &GPIO_InitStruct); 		
@@ -56,9 +57,17 @@ void sm1000_leds_switches_init(void) {
 
     GPIO_InitStruct.GPIO_Pin = SWITCH_PTT | SWITCH_SELECT | SWITCH_BACK;
     GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN; 		
-    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; 
+    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_2MHz; 
     GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL; /* we have our own external pull ups */	
-    GPIO_Init(GPIOD, &GPIO_InitStruct); 		
+    GPIO_Init(GPIOD, &GPIO_InitStruct); 	
+
+    GPIO_InitStruct.GPIO_Pin = EXT_PTT;
+    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN; 		
+    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_2MHz; 
+    GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;     /* use internal pull up */	
+    GPIO_Init(GPIOD, &GPIO_InitStruct); 	
+
+	
 }
 
 void led_pwr(int state) {
@@ -108,6 +117,10 @@ int switch_back(void) {
     return GPIOD->IDR & (1 << 1);
 }
 
+int ext_ptt(void) {
+    return GPIOD->IDR & (1 << 8);
+}
+
 /*
   FUNCTION: ColorfulRingOfDeath()
   AUTHOR..: xenovacivus
diff --git a/codec2-dev/stm32/src/sm1000_main.c b/codec2-dev/stm32/src/sm1000_main.c
index 72b40cc9..1f719f26 100644
--- a/codec2-dev/stm32/src/sm1000_main.c
+++ b/codec2-dev/stm32/src/sm1000_main.c
@@ -103,8 +103,8 @@ int main(void) {
         
         iterate_select_state_machine(&ss);
 
-        if (switch_ptt()) {
-
+        if (switch_ptt() || (ext_ptt() == 0)) {
+            
             /* Transmit -------------------------------------------------------------------------*/
 
             /* ADC2 is the SM1000 microphone, DAC1 is the modulator signal we send to radio tx */
@@ -125,7 +125,6 @@ int main(void) {
                     fdmdv_8_to_16_short(dac16k, &dac8k[FDMDV_OS_TAPS_8K], FREEDV_NSAMPLES);              
                     dac1_write(dac16k, FREEDV_NSAMPLES_16K);
                 }
-
                 if (ss.mode == TONE) {
                     while(dac1_write((short*)aSine, SINE_SAMPLES) == 0);
                 }