Start working on RF95 attached to Raspberry Pi

arch/portduino/portduino.ini

@@ -1,6 +1,7 @@
 ; The Portduino based sim environment on top of any host OS, all hardware will be simulated
 [portduino_base]
 platform = https://github.com/meshtastic/platform-native.git#096b3c3e9c5c8e19d4c3b6cd803fffef2a9be4c5
+platform_packages = framework-portduino@https://github.com/caveman99/framework-portduino.git
 framework = arduino
 build_src_filter = 
   ${env.build_src_filter} 

src/mesh/RF95Interface.cpp

@@ -14,7 +14,7 @@
 RF95Interface::RF95Interface(RADIOLIB_PIN_TYPE cs, RADIOLIB_PIN_TYPE irq, RADIOLIB_PIN_TYPE rst, SPIClass &spi)
     : RadioLibInterface(cs, irq, rst, RADIOLIB_NC, spi)
 {
-    // FIXME - we assume devices never get destroyed
+    LOG_WARN("RF95Interface(cs=%d, irq=%d, rst=%d)\n", cs, irq, rst);
 }
 
 /** Some boards require GPIO control of tx vs rx paths */

src/platform/portduino/PortduinoGlue.cpp

@@ -88,7 +88,31 @@ void portduinoSetup()
 {
     printf("Setting up Meshtastic on Portduino...\n");
 
-#ifdef PORTDUINO_LINUX_HARDWARE
+#ifdef ARCH_RASPBERRY_PI
+    printf("using GPIOD Version: %s\n", gpiod_version_string());
+    // We need to create SPI
+    SPI.begin();
+    if(!spiChip->isSimulated()) {
+        printf("Connecting to RFM95 board...\n");
+        loraIrq = new LinuxGPIOPin(LORA_DIO0, GPIOD_CHIP_LABEL, LORA_DIO0_LABEL, "loraIrq");
+        loraIrq->setSilent();
+        gpioBind(loraIrq);
+
+#if (RF95_NSS != RADIOLIB_NC)
+            auto loraCs = new LinuxGPIOPin(RF95_NSS, GPIOD_CHIP_LABEL, RF95_NSS_LABEL, "loraCs");
+            loraCs->setSilent();
+            gpioBind(loraCs);
+#endif
+
+        auto loraReset = new LinuxGPIOPin(LORA_RESET, GPIOD_CHIP_LABEL, LORA_RESET_LABEL, "loraReset");
+        loraReset->setSilent();
+        gpioBind(loraReset);
+
+    }
+    else
+
+
+#elif defined(PORTDUINO_LINUX_HARDWARE)
     SPI.begin(); // We need to create SPI 
     bool usePineLora = !spiChip->isSimulated();
     if(usePineLora) {

variants/portduino/platformio.ini

@@ -14,9 +14,9 @@ lib_deps = ${portduino_base.lib_deps}
 build_src_filter = ${portduino_base.build_src_filter}
 
 ; The Portduino based sim environment on top of a linux OS and touching linux hardware devices
-[env:linux-arm]
+[env:raspbian]
 extends = portduino_base
-build_flags = ${portduino_base.build_flags} -O0 -lgpiod -I variants/portduino
+build_flags = ${portduino_base.build_flags} -O0 -lgpiod -I variants/portduino -DARCH_RASPBERRY_PI -DRADIOLIB_DEBUG -DRADIOLIB_VERBOSE
 board = linux_arm
 lib_deps = ${portduino_base.lib_deps}
 build_src_filter = ${portduino_base.build_src_filter}

variants/portduino/variant.h

@@ -1,3 +1,35 @@
+#if defined(ARCH_RASPBERRY_PI)
+
+#define GPIOD_CHIP_LABEL "pinctrl-bcm2711"
+
+#define USE_RF95
+#define USE_SX1262
+
+#define NO_SCREEN
+
+#define RF95_SCK 11
+#define RF95_MISO 9
+#define RF95_MOSI 10
+#define RF95_NSS RADIOLIB_NC
+
+#define LORA_DIO0 4 // a No connect on the SX1262 module
+#define LORA_DIO0_LABEL "GPIO_GCLK"
+#define LORA_RESET 17
+#define LORA_RESET_LABEL "GPIO17"
+#define LORA_DIO1 RADIOLIB_NC // SX1262 IRQ, called DIO0 on pinelora schematic, pin 7 on ch341f "ack" - FIXME, enable hwints in linux
+#define LORA_DIO2 RADIOLIB_NC // SX1262 BUSY, actually connected to "DIO5" on pinelora schematic, pin 8 on ch341f "slct" 
+#define LORA_DIO3 RADIOLIB_NC // Not connected on PCB, but internally on the TTGO SX1262, if DIO3 is high the TXCO is enabled
+
+#ifdef USE_SX1262
+#define SX126X_CS RF95_NSS
+#define SX126X_DIO1 LORA_DIO0
+#define SX126X_BUSY LORA_DIO2
+#define SX126X_RESET LORA_RESET
+// HOPE RFM90 does not have a TCXO therefore not SX126X_E22 
+#endif
+
+#else // Pine64 mode.
+
 // Pine64 uses a common pinout for their SX1262 vs RF95 modules - both can be enabled and we will probe at runtime for RF95 and if
 // not found then probe for SX1262.  Currently the RF95 code is disabled because I think the RF95 module won't need to ship.
 // #define USE_RF95
@@ -13,7 +45,7 @@
 #define LORA_RESET 14
 #define LORA_DIO1 33 // SX1262 IRQ, called DIO0 on pinelora schematic, pin 7 on ch341f "ack" - FIXME, enable hwints in linux
 #define LORA_DIO2 32 // SX1262 BUSY, actually connected to "DIO5" on pinelora schematic, pin 8 on ch341f "slct" 
-#define LORA_DIO3    // Not connected on PCB, but internally on the TTGO SX1262, if DIO3 is high the TXCO is enabled
+#define LORA_DIO3 RADIOLIB_NC // Not connected on PCB, but internally on the TTGO SX1262, if DIO3 is high the TXCO is enabled
 
 #ifdef USE_SX1262
 #define SX126X_CS 20 // CS0 on pinelora schematic, hooked to gpio D0 on ch341f
@@ -23,3 +55,5 @@
 // HOPE RFM90 does not have a TCXO therefore not SX126X_E22 
 #endif
 
+#endif
+