Update I2C spec

This commit is contained in:
Ondrej Jirman 2021-06-19 21:23:03 +02:00
parent 541c1ae17a
commit 2185fdaae5
1 changed files with 18 additions and 2 deletions

View File

@ -42,21 +42,37 @@ Registers
0x70: Flashing mode unlock key
(writing 0x46 to this register unlocks the flashing mode.)
0x71: Flashing control
Writing various commands to this register makes the MCU execute them,
if the MCU is not executing the previous command. Available commands:
0x52 - read a block of data from code ROM
0x57 - write a block of data to code ROM
0x45 - erase the code rom memory block (128B)
0x43 - confirm the validity of the firmware and enable redirection
to it from the main app (this redirection is automatically
disabled before executing the 0x57 command)
This register will ignore further commands as long as the last operation
is still in progress. This register will contain the code of the
currently executed operation, and will be cleared after the operation
finishes. Completion is also signalled by pulsing the INT pin shortly.
If the operation fails, this register will contain value 0xff. If it
succeeds it will contain value 0x00.
0x7d: target address low byte
0x7e: target address high byte
0x7f: CRC8 calculated for the 128B block of data from 0x80-0xff
- this must be written by the user when preparing data for write
operation
- this is update by the MCU after reading the data from flash memory
operation, MCU checks the CRC8 of the data and compares it against
the value in this register before starting the execution of
0x57 command
- this is updated by the MCU after reading the data from flash memory
0x80: 128B block of EEPROM data (either read from code memory or to be
... written)
0xff