Commit Graph

13 Commits

Author SHA1 Message Date
Scott Shawcroft 266be30777 atmel-samd: Introduce a nvm module for non-volatile byte-level memory access. (#203)
* atmel-samd: Introduce a nvm module for non-volatile byte-level memory access.

This allows for persisting small configuration values even when the file system
is read-only from CircuitPython.

Fixes #160

* Review feedback:
* Add tests.
* Fix non-zero index.
* Fix len()
2017-08-25 16:00:27 -04:00
Scott Shawcroft 13cb4aa89d atmel-samd: Add support for a second flash chip so either may be used. 2017-08-03 13:44:31 -07:00
Scott Shawcroft 3660023046 atmel-samd: Update README and add pinout tables that map MCU names
to names in the board module and explain pin capabilities.

Fixes #149
2017-07-13 16:05:24 -07:00
Scott Shawcroft 1e04e8ea1c atmel-samd: Reboot to bootloader when a 1200 baud serial connection is
closed. This is how Arduino triggers the bootloader.
2017-07-12 11:58:22 -07:00
Scott Shawcroft a715bf6bac atmel-samd: Introduce board reset mechanic used on CircuitPlayground
Express to ensure the Neopixels are off after reloads.
2017-06-16 15:40:15 -07:00
Scott Shawcroft 3e23464b1e atmel-samd: Add user initiated safe mode and rework board.c for
board specific functionality.

Fixes #155
2017-06-16 14:55:53 -07:00
Scott Shawcroft b5f50fadf9 atmel-samd: Change Metro PID to 0x8014 so it doesn't conflict with Arduino's PID. 2017-06-06 16:18:34 -07:00
robomike 517590a58a atmel-samd:renamed spi flash to confuse with the actual spi flash 2017-05-23 14:09:28 -04:00
Scott Shawcroft 7672bf7736 atmel-samd: Rename auto-reset to auto-reload to reduce confusion with physical reset buttons. 2017-05-12 16:45:38 -07:00
Scott Shawcroft e1a6f6d584 atmel-samd: Rework SPI flash defines for clarity.
Also add sector protection support for the SAMD Xplained board.
2017-05-12 14:47:39 -07:00
Scott Shawcroft 6512ccf32e atmel-samd: Use DMA for user SPI.
Also replace use of PINMUX_DEFAULT with PINMUX_UNUSED to prevent any
accidental pin changes. This caused user SPI to break internal SPI
flash on the Feather M0 Express.

Fixes #100
2017-05-03 10:50:29 -07:00
Scott Shawcroft 24a5752f94 atmel-samd: Use DMA for SPI flash block transfers.
Fixes #99
2017-05-02 15:25:06 -07:00
Scott Shawcroft 4ad22144b0 atmel-samd: Rename metro M0 Express and add NEOPIXEL pin. 2017-05-01 11:29:51 -07:00