Envie_M7: enable USB support

Author: facchinm

boards.txt

@@ -51,8 +51,8 @@ envie_m7.compiler.mbed.cxxflags={build.variant.path}/cxxflags.txt
 envie_m7.compiler.mbed.includes={build.variant.path}/includes.txt
 envie_m7.compiler.mbed.extra_ldflags=-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 envie_m7.compiler.mbed="{build.variant.path}/libs/libmbed.a"
-envie_m7.vid.0=0x0483
-envie_m7.pid.0=0x374e
+envie_m7.vid.0=0x2341
+envie_m7.pid.0=0x025b
 
 envie_m7.upload.tool=dfu-util
 envie_m7.upload.protocol=

variants/ENVIE_M7/defines.txt

@@ -44,7 +44,7 @@
 -DFEATURE_LWIP=1
 -D__FPU_PRESENT=1
 -D__MBED__=1
--DMBED_BUILD_TIMESTAMP=1578499787.7442052
+-DMBED_BUILD_TIMESTAMP=1578656653.6684103
 -D__MBED_CMSIS_RTOS_CM
 -DSTM32H747xx
 -DTARGET_4343W
@@ -72,4 +72,4 @@
 -DTRANSACTION_QUEUE_SIZE_SPI=2
 -DUSE_FULL_LL_DRIVER
 -DUSE_HAL_DRIVER
--DMBED_NO_GLOBAL_USING_DIRECTIVE=1
+-DMBED_NO_GLOBAL_USING_DIRECTIVE=1

variants/ENVIE_M7/libs/libmbed.a

@@ -2,4 +2,15 @@
 
 #define SERIAL_HOWMANY		1
 #define SERIAL1_TX			SERIAL_TX
-#define SERIAL1_RX			SERIAL_RX
+#define SERIAL1_RX			SERIAL_RX
+
+#define SERIAL_CDC			1
+#define HAS_UNIQUE_ISERIAL_DESCRIPTOR
+#define BOARD_VENDORID		0x2341
+#define BOARD_PRODUCTID		0x025b
+#define BOARD_NAME			"Envie M7"
+
+#define DFU_MAGIC_SERIAL_ONLY_RESET   0xb0
+
+uint8_t getUniqueSerialNumber(uint8_t* name);
+void _ontouch1200bps_();

variants/ENVIE_M7/pins_arduino.h

@@ -0,0 +1,34 @@
+#include "Arduino.h"
+
+RTC_HandleTypeDef RTCHandle;
+
+void initVariant() {
+	RTCHandle.Instance = RTC;
+	// Turn off LED red from bootloader
+	digitalWrite(PK_6, HIGH);
+}
+
+#ifdef SERIAL_CDC
+
+static void utox8(uint32_t val, uint8_t* s) {
+  for (int i = 0; i < 16; i=i+2) {
+    int d = val & 0XF;
+    val = (val >> 4);
+
+    s[15 - i -1] = d > 9 ? 'A' + d - 10 : '0' + d;
+    s[15 - i] = '\0';
+  }
+}
+
+uint8_t getUniqueSerialNumber(uint8_t* name) {
+  utox8(HAL_GetUIDw0(), &name[0]);
+  utox8(HAL_GetUIDw1(), &name[16]);
+  return 32;
+}
+
+void _ontouch1200bps_() {
+  HAL_RTCEx_BKUPWrite(&RTCHandle, RTC_BKP_DR0, 0xDF59);
+  NVIC_SystemReset();
+}
+
+#endif