Mathias Brossard

Moving HICs to use CMSIS UART Drivers

3

Based on @flit's work on `lpc55xx`. Using `kl27z` as an example. (ping @gerargz, @microbit-carlos)

This saves `VFS_SECTOR_SIZE` (512) bytes of RAM by pre-computing all the fields that depend on the virtual disk which is known (`VFS_DISK_SIZE`) at compile-time.

Add nrf52840 HIC

2

Based on the nRF52820 HIC and efforts by @maxd-nordic.

- Fixes #1040 - Updates CI to use Arm GNU Toolchain version 13.2.Rel1 (builds on #1042)

Adding RTX5/CMSIS-RTOS2 was done in #750 / #580. Now we need to switch `armcc` to it and remove the old RTX4/CMSIS-RTOS1

Background: The file `source/daplink/drag-n-drop/iap_flash_intf.c` contains the implementation of the `flash_intf_t` interface to flash the probe in order to update the bootloader or interface firmware. One of the feature it contains...

All HICs that only support FS USB should only have 64 bytes as DAP_PACKET_SIZE value.