STM32F4 DAC patch
Added circular buffer support for DAC
Merge branch 'master' into dac
Various minor fixes, adding double buffer more.
Working on DAC2.
Updated structures, DAC2 addition complete but needs debugging. (DMA does not work)
Added DAC error callback and ISR.
Fixed DMA channel for DAC2.
Fixed DMA channel mask.
Fixed second DAC channel.
Merge branch 'master' of github.com:mabl/ChibiOS into dac
Initial push for F0x, F30x and F37x DAC driver.
Minor fixes.
Adding testhal demos for F0xx, F37x and F30x. Fixed the drivers so that they compile fine.
Updated F4 testhal demo.
dac_lld_stop() now stops the DAC clock and associated timer when safe.
Cleaning dac_lld_stop function.
Fixed indentation.
DAC driver tested and fixed on F0xx/F30x/F4xx. F37x fix based on F30x but untested.
Changed API to match I2S driver.
Moved sources to STM32/DACv1 folder.
Fixed F4 hal demo.