altos/stmf0, stm32f0: Call ao_boot_chain to start application This used to be done inside ao_boot_check_chain or ao_boot_check_pin, but it made more sense to have it done in _start instead. stm and lpc were adjusted, but stmf0 and stm32f4 were missed. This caused boards using this process to wedge in the boot loader. Signed-off-by: Keith Packard <keithp@keithp.com>
altos/stm32f4: Add more stm32f413 definitions and support code Signed-off-by: Keith Packard <keithp@keithp.com>
altos/stm32f4: Add usart driver for usart6 This is what the disco board hooks up. Signed-off-by: Keith Packard <keithp@keithp.com>
altos/stm32f4: Start adding support for STM32F413 Enough to get clocks lit up at least. Signed-off-by: Keith Packard <keithp@keithp.com>