From f2f2afe13ba3ae1da8a546ad85eb9e69ddc70a8a Mon Sep 17 00:00:00 2001 From: Nick Brassel Date: Thu, 12 Mar 2020 12:59:55 +1100 Subject: Add support for STM32L0/L1 onboard EEPROM. (#8002) * Add support for STM32L0/L1 onboard EEPROM. * Update docs/eeprom_driver.md Co-Authored-By: Joel Challis Co-authored-by: Joel Challis --- docs/eeprom_driver.md | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'docs/eeprom_driver.md') diff --git a/docs/eeprom_driver.md b/docs/eeprom_driver.md index dd12d8ec7b..5a91a7c2da 100644 --- a/docs/eeprom_driver.md +++ b/docs/eeprom_driver.md @@ -2,14 +2,16 @@ The EEPROM driver can be swapped out depending on the needs of the keyboard, or whether extra hardware is present. -Driver | Description ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- -`EEPROM_DRIVER = vendor` | Uses the on-chip driver provided by the chip manufacturer. For AVR, this is provided by avr-libc. This is supported on ARM for a subset of chips -- STM32F3xx, STM32F1xx, and STM32F072xB will be emulated by writing to flash. Other chips will generally act as "transient" below. -`EEPROM_DRIVER = i2c` | Supports writing to I2C-based 24xx EEPROM chips. See the driver section below. -`EEPROM_DRIVER = transient` | Fake EEPROM driver -- supports reading/writing to RAM, and will be discarded when power is lost. +Driver | Description +-----------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- +`EEPROM_DRIVER = vendor` (default) | Uses the on-chip driver provided by the chip manufacturer. For AVR, this is provided by avr-libc. This is supported on ARM for a subset of chips -- STM32F3xx, STM32F1xx, and STM32F072xB will be emulated by writing to flash. STM32L0xx and STM32L1xx will use the onboard dedicated true EEPROM. Other chips will generally act as "transient" below. +`EEPROM_DRIVER = i2c` | Supports writing to I2C-based 24xx EEPROM chips. See the driver section below. +`EEPROM_DRIVER = transient` | Fake EEPROM driver -- supports reading/writing to RAM, and will be discarded when power is lost. ## Vendor Driver Configuration +!> Resetting EEPROM using an STM32L0/L1 device takes up to 1 second for every 1kB of internal EEPROM used. + No configurable options are available. ## I2C Driver Configuration -- cgit v1.2.1