bootloader: Bump bootloader version to 4

This also updates BootloaderTest to expect this version.

Author: matthijskooijman

BootloaderTest/Constants.h

@@ -112,7 +112,7 @@ static const uint8_t NUM_CHILDREN = 1;
 static const uint8_t EXTRA_INFO[] = {};
 #define BOARD_INFO_FILE "board_info/gphopper.h"
 #endif
-static const uint8_t BOOTLOADER_VERSION = 0x03;
+static const uint8_t BOOTLOADER_VERSION = 0x04;
 
 #if defined (USE_I2C)
 static const uint8_t MAX_WRITE_DATA_LEN = MAX_MSG_LEN - 4; // cmd, 2xaddr, crc

Makefile

@@ -39,7 +39,7 @@ FLASH_APP_OFFSET    = $(BL_SIZE)
 BL_OFFSET           = 0
 endif
 
-BL_VERSION      = 3
+BL_VERSION      = 4
 BOARD_INFO_SIZE = 64
 
 CXXFLAGS       =

README.md

@@ -41,7 +41,7 @@ The bootloader needs about 2k of flash.
 To upload the bootloader using avrdude and an usbasp programmer, you can
 use something like this:
 
-    avrdude -p attiny841 -c usbasp -U flash:w:bootloader-v3-interfaceboard.hex -U flash:w:BootloaderTest/board_info/interfaceboard.hex
+    avrdude -p attiny841 -c usbasp -U flash:w:bootloader-v4-interfaceboard.hex -U flash:w:BootloaderTest/board_info/interfaceboard.hex
 
 Note that the board info is not included in the bootloader hex file, but
 must be separately uploaded. The above command does this with a single
@@ -67,7 +67,7 @@ rounded up to full 2k erase pages).
 To upload the bootloader using openocd and an stlink programmer, you can
 use something like this:
 
-    openocd -f interface/stlink.cfg -f target/stm32g0x.cfg -c 'init; reset init; stm32l4x mass_erase 0; flash write_image bootloader-v3-gphopper.hex; flash write_image BootloaderTest/board_info/gphopper.hex; reset run; shutdown'
+    openocd -f interface/stlink.cfg -f target/stm32g0x.cfg -c 'init; reset init; stm32l4x mass_erase 0; flash write_image bootloader-v4-gphopper.hex; flash write_image BootloaderTest/board_info/gphopper.hex; reset run; shutdown'
 
 Note that the board info is not included in the bootloader hex file, but
 must be separately uploaded. The above command does this with a single