Allow selecting higher baud rates (#640)

* higher baud rates

* Update colorlcd models to support selectable baud tp 3.75M

# Conflicts:
#	radio/src/gui/colorlcd/radio_hardware.cpp

Co-authored-by: Jye <JyeSmith@users.noreply.github.com>
Co-authored-by: Paul Kendall <pkendall64@gmail.com>

radio/src/gui/colorlcd/radio_hardware.cpp

@@ -149,6 +149,21 @@ class BluetoothConfigWindow : public FormGroup
 };
 #endif
 
+void restartExternalModule()
+{
+  if (!IS_EXTERNAL_MODULE_ON()) {
+    return;
+  }
+  pauseMixerCalculations();
+  pausePulses();
+  EXTERNAL_MODULE_OFF();
+  RTOS_WAIT_MS(20); // 20ms so that the pulses interrupt will reinit the frame rate
+  telemetryProtocol = 255; // force telemetry port + module reinitialization
+  EXTERNAL_MODULE_ON();
+  resumePulses();
+  resumeMixerCalculations();
+}
+
 void RadioHardwarePage::build(FormWindow * window)
 {
   FormGridLayout grid;
@@ -259,10 +274,18 @@ void RadioHardwarePage::build(FormWindow * window)
   new CheckBox(window, grid.getFieldSlot(1,0), GET_SET_INVERTED(g_eeGeneral.disableRtcWarning ));
   grid.nextLine();
 
-#if defined(CROSSFIRE) && SPORT_MAX_BAUDRATE < 400000
+#if defined(CROSSFIRE)
   // Max baud for external modules
   new StaticText(window, grid.getLabelSlot(), STR_MAXBAUDRATE, 0, COLOR_THEME_PRIMARY1);
-  new Choice(window, grid.getFieldSlot(1,0), STR_CRSF_BAUDRATE, 0, 1, GET_SET_DEFAULT(g_eeGeneral.telemetryBaudrate));
+  new Choice(window, grid.getFieldSlot(1,0), STR_CRSF_BAUDRATE, 0, DIM(CROSSFIRE_BAUDRATES) - 1,
+               [=]() -> int {
+                   return DIM(CROSSFIRE_BAUDRATES) - 1 - g_eeGeneral.telemetryBaudrate;
+               },
+               [=](int newValue) {
+                   g_eeGeneral.telemetryBaudrate = DIM(CROSSFIRE_BAUDRATES) - 1 - newValue;
+                   SET_DIRTY();
+                   restartExternalModule();
+               });
   grid.nextLine();
 #endif
 

radio/src/gui/common/stdlcd/radio_hardware.cpp

@@ -165,7 +165,7 @@ enum {
   ITEM_RADIO_HARDWARE_CAPACITY_CALIB,
 #endif
 
-#if (defined(CROSSFIRE) || defined(GHOST)) && SPORT_MAX_BAUDRATE < 400000
+#if (defined(CROSSFIRE) || defined(GHOST))
   ITEM_RADIO_HARDWARE_SERIAL_BAUDRATE,
 #endif
 
@@ -287,7 +287,7 @@ enum {
   #define TX_CAPACITY_MEASUREMENT_ROWS
 #endif
 
-#if (defined(CROSSFIRE) || defined(GHOST)) && (SPORT_MAX_BAUDRATE < 400000 || defined(DEBUG))
+#if (defined(CROSSFIRE) || defined(GHOST))
   #define MAX_BAUD_ROWS                  0,
 #else
   #define MAX_BAUD_ROWS
@@ -575,7 +575,7 @@ void menuRadioHardware(event_t event)
         break;
 #endif
 
-#if (defined(CROSSFIRE) || defined(GHOST)) && SPORT_MAX_BAUDRATE < 400000
+#if (defined(CROSSFIRE) || defined(GHOST))
       case ITEM_RADIO_HARDWARE_SERIAL_BAUDRATE:
         lcdDrawTextAlignedLeft(y, STR_MAXBAUDRATE);
         lcdDrawNumber(HW_SETTINGS_COLUMN2, y, CROSSFIRE_BAUDRATES[g_eeGeneral.telemetryBaudrate], attr|LEFT);

radio/src/targets/horus/telemetry_driver.cpp

@@ -65,11 +65,13 @@ void telemetryPortInit(uint32_t baudrate, uint8_t mode)
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
-  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
   GPIO_Init(TELEMETRY_GPIO, &GPIO_InitStructure);
 
   telemetryInitDirPin();
 
+  USART_OverSampling8Cmd(TELEMETRY_USART, ENABLE);
+  
   USART_InitStructure.USART_BaudRate = baudrate;
   if (mode & TELEMETRY_SERIAL_8E2) {
     USART_InitStructure.USART_WordLength = USART_WordLength_9b;

radio/src/targets/taranis/telemetry_driver.cpp

@@ -57,12 +57,15 @@ void telemetryPortInit(uint32_t baudrate, uint8_t mode)
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
-  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
   GPIO_Init(TELEMETRY_GPIO, &GPIO_InitStructure);
 
   telemetryInitDirPin();
 
   USART_DeInit(TELEMETRY_USART);
+  
+  USART_OverSampling8Cmd(TELEMETRY_USART, ENABLE);
+  
   USART_InitTypeDef USART_InitStructure;
   USART_InitStructure.USART_BaudRate = baudrate;
   if (mode & TELEMETRY_SERIAL_8E2) {

radio/src/telemetry/crossfire.h

@@ -95,20 +95,21 @@ void crossfireSetDefault(int index, uint8_t id, uint8_t subId);
 uint8_t createCrossfireModelIDFrame(uint8_t * frame);
 
 const uint32_t CROSSFIRE_BAUDRATES[] = {
+  3750000,
+  1870000,
+  921600,
   400000,
   115200,
 };
 const uint8_t CROSSFIRE_FRAME_PERIODS[] = {
+  4,
+  4,
+  4,
   4,
   16,
 };
-#if SPORT_MAX_BAUDRATE < 400000 || defined(DEBUG)
 #define CROSSFIRE_BAUDRATE    CROSSFIRE_BAUDRATES[g_eeGeneral.telemetryBaudrate]
 #define CROSSFIRE_PERIOD      (CROSSFIRE_FRAME_PERIODS[g_eeGeneral.telemetryBaudrate] * 1000)
-#else
-#define CROSSFIRE_BAUDRATE       400000
-#define CROSSFIRE_PERIOD         4000 /* us; 250 Hz */
-#endif
 
 #define CROSSFIRE_TELEM_MIRROR_BAUDRATE   115200
 

radio/src/translations/untranslated.h

@@ -91,8 +91,8 @@
 
 #define TR_VSRCRAW                     "---\0" TR_STICKS_VSRCRAW TR_POTS_VSRCRAW TR_GYR_VSRCRAW "MAX\0" TR_CYC_VSRCRAW TR_TRIMS_VSRCRAW TR_SW_VSRCRAW TR_EXTRA_VSRCRAW
 
-#define LEN_CRSF_BAUDRATE              "\004"
-#define TR_CRSF_BAUDRATE               "115k""400k"
+#define LEN_CRSF_BAUDRATE              "\005"
+#define TR_CRSF_BAUDRATE               "115k\0""400k\0""921k\0""1.87m""3.75m"
 
 #if defined(MODULE_PROTOCOL_FLEX)
 #define TR_MODULE_R9M_LITE             "R9ML\0       "