MSP VTX device

src/hardware/RX/Generic 2400 True Diversity PA and VTx.json

@@ -43,8 +43,8 @@
     "vtx_amp_vpd": 4,
     "vtx_amp_vref": 2,
 
-    "vtx_amp_vpd_25mW": [1350,1350,1350,1350],
-    "vtx_amp_vpd_100mW": [1600,1600,1600,1600],
+    "vtx_amp_vpd_25mW": [600,600,600,600],
+    "vtx_amp_vpd_100mW": [1500,1500,1500,1500],
 
     "button": 0
 }

src/hardware/RX/Generic 2400 True Diversity and VTx.json

@@ -37,8 +37,8 @@
     "vtx_amp_vpd": 4,
     "vtx_amp_vref": 2,
 
-    "vtx_amp_vpd_25mW": [1350,1350,1350,1350],
-    "vtx_amp_vpd_100mW": [1600,1600,1600,1600],
+    "vtx_amp_vpd_25mW": [600,600,600,600],
+    "vtx_amp_vpd_100mW": [1500,1500,1500,1500],
 
     "button": 0
 }

src/hardware/RX/Generic 2400 Whoop Rx and VTx.json

@@ -33,8 +33,8 @@
     "vtx_amp_vpd": 4,
     "vtx_amp_vref": 2,
 
-    "vtx_amp_vpd_25mW": [1350,1350,1350,1350],
-    "vtx_amp_vpd_100mW": [1600,1600,1600,1600],
+    "vtx_amp_vpd_25mW": [600,600,600,600],
+    "vtx_amp_vpd_100mW": [1500,1500,1500,1500],
 
     "button": 0
 }

src/include/target/Unified_ESP_RX.h

@@ -127,6 +127,7 @@
 
 // VTX
 #define HAS_VTX_SPI
+#define HAS_MSP_VTX
 #define OPT_HAS_VTX_SPI (hardware_pin(HARDWARE_vtx_nss) != UNDEF_PIN)
 #define GPIO_PIN_RF_AMP_PWM hardware_pin(HARDWARE_vtx_amp_pwm)
 #define GPIO_PIN_RF_AMP_VPD hardware_pin(HARDWARE_vtx_amp_vpd)

src/include/targets.h

@@ -49,6 +49,7 @@
 #if defined(GPIO_PIN_SPI_VTX_NSS)
 #if !defined(HAS_VTX_SPI)
 #define HAS_VTX_SPI
+#define HAS_MSP_VTX
 #define OPT_HAS_VTX_SPI true
 #endif
 #else

src/lib/CRSF/CRSF.cpp

@@ -978,6 +978,19 @@ void CRSF::GetDeviceInformation(uint8_t *frame, uint8_t fieldCount)
     device->parameterVersion = 0;
 }
 
+void CRSF::SetMspV2Request(uint8_t *frame, uint16_t function, uint8_t *payload, uint8_t payloadLength)
+{
+    uint8_t *packet = (uint8_t *)(frame + sizeof(crsf_ext_header_t));                
+    packet[0] = 0x50;          // no error, version 2, beginning of the frame, first frame (0)
+    packet[1] = 0;             // flags
+    packet[2] = function & 0xFF;
+    packet[3] = (function >> 8) & 0xFF;
+    packet[4] = payloadLength & 0xFF;
+    packet[5] = (payloadLength >> 8) & 0xFF;
+    memcpy(packet + 6, payload, payloadLength);
+    packet[6 + payloadLength] = CalcCRCMsp(packet + 1, payloadLength + 5); // crc = flags + function + length + payload
+}
+
 void CRSF::SetHeaderAndCrc(uint8_t *frame, uint8_t frameType, uint8_t frameSize, uint8_t destAddr)
 {
     crsf_header_t *header = (crsf_header_t *)frame;

src/lib/CRSF/CRSF.h

@@ -55,6 +55,7 @@ class CRSF
     static void End(); //stop timers etc
 
     static void GetDeviceInformation(uint8_t *frame, uint8_t fieldCount);
+    static void SetMspV2Request(uint8_t *frame, uint16_t function, uint8_t *payload, uint8_t payloadLength);
     static void SetHeaderAndCrc(uint8_t *frame, uint8_t frameType, uint8_t frameSize, uint8_t destAddr);
     static void SetExtendedHeaderAndCrc(uint8_t *frame, uint8_t frameType, uint8_t frameSize, uint8_t senderAddr, uint8_t destAddr);
     static uint32_t VersionStrToU32(const char *verStr);
@@ -66,8 +67,6 @@ class CRSF
 
     static void packetQueueExtended(uint8_t type, void *data, uint8_t len);
 
-    static void ICACHE_RAM_ATTR sendSetVTXchannel(uint8_t band, uint8_t channel);
-
     ///// Variables for OpenTX Syncing //////////////////////////
     #define OpenTXsyncPacketInterval 200 // in ms
     static void ICACHE_RAM_ATTR setSyncParams(uint32_t PacketInterval);

src/lib/CrsfProtocol/crsf_protocol.h

@@ -235,6 +235,50 @@ typedef struct deviceInformationPacket_s
 #define DEVICE_INFORMATION_LENGTH (sizeof(crsf_ext_header_t) + DEVICE_INFORMATION_PAYLOAD_LENGTH + CRSF_FRAME_CRC_SIZE)
 #define DEVICE_INFORMATION_FRAME_SIZE (DEVICE_INFORMATION_PAYLOAD_LENGTH + CRSF_FRAME_LENGTH_EXT_TYPE_CRC)
 
+// https://github.com/betaflight/betaflight/blob/master/src/main/msp/msp.c#L1949
+typedef struct mspVtxConfigPacket_s
+{
+    uint8_t vtxType;
+    uint8_t band;
+    uint8_t channel;
+    uint8_t power;
+    uint8_t pitmode;
+    uint16_t freq;
+    uint8_t deviceIsReady;
+    uint8_t lowPowerDisarm;
+    uint16_t pitModeFreq;
+    uint8_t vtxTableAvailable;
+    uint8_t bands;
+    uint8_t channels;
+    uint8_t powerLevels;
+} PACKED mspVtxConfigPacket_t;
+
+typedef struct mspVtxPowerLevelPacket_s
+{
+    uint8_t powerLevel;
+    uint16_t powerValue;
+    uint8_t powerLabelLength;
+    uint8_t label[3];
+} PACKED mspVtxPowerLevelPacket_t;
+
+typedef struct mspVtxBandPacket_s
+{
+    uint8_t band;
+    uint8_t bandNameLength;
+    uint8_t bandName[8];
+    uint8_t bandLetter;
+    uint8_t isFactoryBand;
+    uint8_t channels;
+    uint16_t channel[8];
+} PACKED mspVtxBandPacket_t;
+
+#define MSP_REQUEST_PAYLOAD_LENGTH(len) 7 + len // status + flags + 2 function + 2 length + crc + payload
+#define MSP_REQUEST_LENGTH(len) (sizeof(crsf_ext_header_t) + MSP_REQUEST_PAYLOAD_LENGTH(len) + CRSF_FRAME_CRC_SIZE)
+#define MSP_REQUEST_FRAME_SIZE(len) (MSP_REQUEST_PAYLOAD_LENGTH(len) + CRSF_FRAME_LENGTH_EXT_TYPE_CRC)
+
+#define MSP_SET_VTX_CONFIG_PAYLOAD_LENGTH 15
+#define MSP_SET_VTXTABLE_BAND_PAYLOAD_LENGTH 29
+#define MSP_SET_VTXTABLE_POWERLEVEL_PAYLOAD_LENGTH 7
 /**
  * Union to allow accessing the input buffer as different data shapes
  * without generating compiler warnings (and relying on undefined C++ behaviour!)

src/lib/MSP/msptypes.h

@@ -5,6 +5,13 @@
 #define MSP_SET_RX_CONFIG   45
 #define MSP_VTX_CONFIG      88   //out message         Get vtx settings - betaflight
 #define MSP_SET_VTX_CONFIG  89   //in message          Set vtx settings - betaflight
+
+#define MSP_VTXTABLE_BAND               137 //out message         vtxTable band/channel data
+#define MSP_SET_VTXTABLE_BAND           227 //in message          set vtxTable band/channel data (one band at a time)
+
+#define MSP_VTXTABLE_POWERLEVEL         138 //out message         vtxTable powerLevel data
+#define MSP_SET_VTXTABLE_POWERLEVEL     228 //in message          set vtxTable powerLevel data (one powerLevel at a time)
+
 #define MSP_EEPROM_WRITE    250  //in message          no param
 
 // ELRS specific opcodes