* i2c: pass a config to init
For now, allow setting the i2c target speed
* i2c: allow selecting the scl/sda pins
Similar to the previous commit for uart, this allows specifying the pins for
microcontrollers that support multiple pins for a single i2c peripheral
* stm32f407: add support for i2c
Supports using all I2C peripherals with all their pins in standard mode (fast
mode support will be added in the future).
* build.zig: Trivial rename around UART test
* mmio: Add writeRaw() to set a full register
* UART: Add TODO for auto baud rate detection
* STM32F30x Initial USART1 output/transmit support
All code assumes default chip clock configuration.
Code assumes STM32F303xB / STM32F3030xC.
Code supports only 8 data bits, 1 stop bit.
* stm32f3discovery @panic() to UART1
This is done by implementing `debugWrite()` for the board,
which only initializes UART1 if that was not yet done,
and flushes afterwards to make sure the host receives all.
* stm32f303: Support UART1 reader
This is done by implementing `rx()` and `canRead()`.
* stm32f303 UART1 correctly support 7 and 8 bits
This includes correctly masking the parity bit
on reads.
* stm32f3 UART1 support 0.5/1.5/2 stop bits
* stm32f303 UART1 simplify parity code
* stm32f303 I2C rough initial code
Allows only writing and reading single bytes.
* stm32f3 i2c: enable debug 'logging'
* Add a few comments
* I2C API changes, STM32F303 I2C multi-byte transfers
Now using controller/device terminology, instead of master/slave.
Now using 'transfer objects' to make STOPs and re-STARTs explicit,
and allow using Writer and Reader APIs.
Added 'register' abstraction.
STM32F303 I2C now supports this new API, and multi-byte transfers.
Now waiting for I2C_ISR.BUSY == 0, after setting I2C_CR2.STOP == 1.
Without this, the sequence write-stop-write caused an additional STOP
to be sent immediately the START and address of the second write.
* Make work with regz-generated registers.zig change
* Updated to match regz-generated update
* After #23 repair Reset on stm32, lpc1768
* Clean-up I2C `readRegisters()`.
* Refactor to separate read/write states
* On STM32F303, make second read call fail
Also doc comments to clarify the new API.
* STM32 I2C: Properly support multiple write calls
* I2C STM32: Fix release mode compile error
...on top of an earlier commit on this branch.
* I2C Add 'write register' shorthand functions
Riccardo Binetti
Marnix Klooster