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7 Commits

Author SHA1 Message Date
Damien George 0c9f5b388e stm32: Include HAL MMC code in F4 builds. 
So that the MMC driver can be used on F4 MCUs.

Signed-off-by: Damien George <damien@micropython.org>
 2021-11-30 10:21:18 +11:00
David Lechner ca0c75f504 stm32/boards: Change default LSI_VALUE to 32000 for F4 MCUs. 
In the STM32 HAL libraries, the default value for LSI_VALUE for F4 MCUs is
32 kHz.

Signed-off-by: David Lechner <david@pybricks.com>
 2021-05-04 16:53:40 +10:00
Damien George d2a34c62e7 stm32/uart: Add uart_set_baudrate function. 
This allows changing the baudrate of the UART without reinitialising it
(reinitialising can lead to spurious characters sent on the TX line).

Signed-off-by: Damien George <damien@micropython.org>
 2021-02-14 18:30:49 +11:00
Damien George 0efa0b5437 stm32/mboot: Add ELEM_TYPE_STATUS element so application can get status. 
This new element takes the form: (ELEM_TYPE_STATUS, 4, <address>).  If this
element is present in the mboot command then mboot will store to the given
address the result of the filesystem firmware update process.  The address
can for example be an RTC backup register.

Signed-off-by: Damien George <damien@micropython.org>
 2021-01-29 15:02:55 +11:00
Damien George 80883a82c0 stm32/adc: Deselect VBAT after reading to prevent battery drain. 
Signed-off-by: Damien George <damien@micropython.org>
 2020-12-18 13:32:02 +11:00
Damien George cc2a35b7b2 stm32/rtc: Validate the RTC prescaler on boot and change if incorrect. 
Devices with RTC backup-batteries have been shown (very rarely) to have
incorrect RTC prescaler values.  Such incorrect values mean the RTC counts
fast or slow, and will be wrong forever if the power/backup-battery is
always present.

This commit detects such a state at start up (hard reset) and corrects it
by reconfiguring the RTC prescaler values.

Signed-off-by: Damien George <damien@micropython.org>
 2020-11-13 11:23:52 +11:00
Damien George f96f53cd97 stm32/boards: Add stm32??xx_hal_conf_base.h files with common settings. 
These are intended to be used by all boards, to reduce the size of a
board's configuration.
 2019-06-25 14:18:24 +10:00