On 09/02/2018 05:51 PM, Geoffrey Barton via mseide-msegui-talk wrote: > > > > Unfortunately these do not control i2s & DMA, only timers and CAN. > NB you can set those regs via software, they are only cleared by POR. > https://www.st.com/content/ccc/resource/technical/document/reference_manual/4d/ed/bc/89/b5/70/40/dc/DM00135183.pdf/files/DM00135183.pdf/jcr:content/translations/en.DM00135183.pdf " RM0390 Reference manual STM32F446xx advanced Arm®-based 32-bit MCUs
23.4.16 Debug mode When the microcontroller enters debug mode (core halted), the SMBus timeout either continues to work normally or stops, depending on the DBG_I2Cx_STOP configuration bits in the DBG module. 24.5 I2C debug mode When the microcontroller enters the debug mode (Cortex ®-M4 with FPU core halted), the SMBUS timeout either continues to work normally or stops, depending on the DBG_I2Cx_SMBUS_TIMEOUT configuration bits in the DBG module. For more details, refer to Section 33.16.2: Debug support for timers, watchdog, bxCAN and I2C. 33.16.2 Debug support for timers, watchdog, bxCAN and I2C During a breakpoint, it is necessary to choose how the counter of timers and watchdog should behave: • They can continue to count inside a breakpoint. This is usually required when a PWM is controlling a motor, for example. • They can stop to count inside a breakpoint. This is required for watchdog purposes. For the bxCAN, the user can choose to block the update of the receive register during a breakpoint. For the I2C, the user can choose to block the SMBUS timeout during a breakpoint. 33.16.4 Debug MCU APB1 freeze register (DBGMCU_APB1_FZ) The DBGMCU_APB1_FZ register is used to configure the MCU under Debug. It concerns APB1 peripherals. It is mapped on the external PPB bus at address 0xE004 2008. The register is asynchronously reset by the POR (and not the system reset). It can be written by the debugger under system reset. Address : 0xE004 2008 Only 32-bits access are supported. Power-on reset (POR): 0x0000 0000 (not reset by system reset) " I did not read i carefully. ;-) Martin ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ mseide-msegui-talk mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mseide-msegui-talk
