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* altos: Increase STM SPI speed to PCLK/4Keith Packard2012-04-09
| | | | | | The pressure sensor seems happy at this speed. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Make STM clock configuration per-product. Fix 32MHz CPU speedKeith Packard2012-04-09
| | | | | | | | | | This moves all of the STM clock configuration into ao_pins.h so that each product can configure it separately. While doing this, I discovered that the flash memory mode (64-bit, prefetch, latency 1) wasn't actually getting set, which is why the CPU refused to work at 32MHz. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add beeper driver to STM archKeith Packard2012-04-09
| | | | | | Drives the MegaMetrum beeper Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: add STM I2C driver.Keith Packard2012-04-09
| | | | | | Not well tested yet... Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Slow STM SPI down a bit so the MS5607 returns valuesKeith Packard2012-04-09
| | | | | | | It's still not working right, but at least it returns something other than all zeros... Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Allow STM DMA channels to be reserved for one useKeith Packard2012-04-09
| | | | | | | | | This allows a single user of a DMA channel to reserve it for use without needing to lock the mutex; this is required for DMA from the ADC to work on megametrum as it wants to start DMA from an interrupt handler, which cannot block on a mutex. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Use 384 cycle ADC sample timeKeith Packard2012-04-07
| | | | | | This is plenty fast, and provides nice stable readings. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add STM temperature sensor calibration dataKeith Packard2012-04-07
| | | | | | | Each stm32l has two-point factory temperature calibration data. Provide access to that for displaying temperature data. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: STM SPI is not using interrupts itselfKeith Packard2012-04-07
| | | | | | All SPI transfers are done via DMA, so the DMA interrupts suffice. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add support for STM ADCKeith Packard2012-04-07
| | | | | | DMA-based driver for the STM analog to digital converter. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Declare stm DMA address registers as volatile void *Keith Packard2012-04-06
| | | | | | Eliminates a cast when assigning to them. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Disable DMA unit when idleKeith Packard2012-04-06
| | | | | | Should save a bit of power Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Disable STM SPI transceiver when idleKeith Packard2012-04-06
| | | | | | Should save a bit of power. Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Add DMA, SPI and MS5607 driversKeith Packard2012-04-06
| | | | Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Move SPI functions to architecture-specific locationKeith Packard2012-04-02
| | | | | | | | Some architecture specific stuff needs to use core altos code, so create new ao_arch_funcs.h files per architecture that get pulled in at the end of ao.h Signed-off-by: Keith Packard <keithp@keithp.com>
* altos: Oops. Set per-USART STM baud rate register instead of usart1Keith Packard2012-04-02
| | | | | | | Was accidentally always setting usart1 instead of the per-usart register. Didn't work too well for other usarts... Signed-off-by: Keith Packard <keithp@keithp.com>
* use explicit path not $(HOME) to find ARM toolchain for nowBdale Garbee2012-03-31
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* Use -Os for STM apps. Fix altos.ld to matchall .rodata* sectionsKeith Packard2012-03-28
| | | | | | | | Without .rodata*, it would stick the flash copy of the data on top of any further .rodata* sections. Fortunately, the linker catches that and complains... Signed-off-by: Keith Packard <keithp@keithp.com>
* Get config stuff hooked up for MegaMetrumKeith Packard2012-03-28
| | | | | | This stubs out enough stuff to let ao_config link and work Signed-off-by: Keith Packard <keithp@keithp.com>
* Use 16-bits for STM32 LED mask. Export serial I/O functionsKeith Packard2012-03-28
| | | | Signed-off-by: Keith Packard <keithp@keithp.com>
* Clean up STM build by moving common defs to Makefile.defsKeith Packard2012-03-28
| | | | | | Shortens default Makefile a bit Signed-off-by: Keith Packard <keithp@keithp.com>
* Flush LCD changes each time the text is updatedKeith Packard2012-03-28
| | | | | | Rather than requiring the caller to do it. Signed-off-by: Keith Packard <keithp@keithp.com>
* Automatically set ALTERNATE pin mode when setting alternate functionKeith Packard2012-03-28
| | | | | | | When selecting an alternate function, set the pin to alternate mode as well; there's no sense requiring two separate calls everywhere. Signed-off-by: Keith Packard <keithp@keithp.com>
* Allow any STM usart to be used for stdioKeith Packard2012-03-28
| | | | | | | This also adds the alternate pin configurations for the other two usarts Signed-off-by: Keith Packard <keithp@keithp.com>
* Move LCD string output code to ao_lcd_font.cKeith Packard2012-03-28
| | | | | | | It's all very specific to the 14-segment display, so stick it there. Signed-off-by: Keith Packard <keithp@keithp.com>
* Add LCD device driver to STM32L portKeith Packard2012-03-28
| | | | | | | This enables the 6-digit 14-character display on the STM32L discovery board and provides an ascii output to it. Signed-off-by: Keith Packard <keithp@keithp.com>
* Add defines for LCD controller and RTC clockingKeith Packard2012-03-28
| | | | Signed-off-by: Keith Packard <keithp@keithp.com>
* Actually enable usarts with the new usart codeKeith Packard2012-03-28
| | | | | | | And move USART1 to PB6/PB7 to avoid conflicting with the LCD pins. Signed-off-by: Keith Packard <keithp@keithp.com>
* Clean up multiple serial port support for STM32LKeith Packard2012-03-28
| | | | Signed-off-by: Keith Packard <keithp@keithp.com>
* Add support for multiple serial ports on STM32LKeith Packard2012-03-28
| | | | Signed-off-by: Keith Packard <keithp@keithp.com>
* Save/restore PRIMASK register on Cortex-M3Keith Packard2012-03-28
| | | | | | This preserves the interrupt-enabled bit across context switches Signed-off-by: Keith Packard <keithp@keithp.com>
* Fix STM LED driver and blink LEDs on discovery boardKeith Packard2012-03-28
| | | | | | | | This adds a task to blink the LEDs, after first fixing up the LED output code to enable the GPIO and talk to the right pins for the discovery board. Signed-off-by: Keith Packard <keithp@keithp.com>
* Basic OS running on STM32LKeith Packard2012-03-28
| | | | | | This gets stm-demo working Signed-off-by: Keith Packard <keithp@keithp.com>
* Add stm-demo programKeith Packard2012-03-28
| | | | | | This runs AltOS and talks over the serial port. Signed-off-by: Keith Packard <keithp@keithp.com>
* Add STM platform and stm-bringup demo programKeith Packard2012-03-28
The stm-bringup doesn't run altos, it just initializes the device and writes stuff over a serial port. Works on the STM32L Discovery board at least, should do stuff on other boards too. Signed-off-by: Keith Packard <keithp@keithp.com>
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