Am 12.10.2017 um 12:40 schrieb Timo Fuckner: > Hello everyone, > > I am currently having trouble writing the controlling registers for the ADC > on STM8L152C6 (the discovery board [1]). Reading and writing the IO data and > control registers works fine, but I can't change anything in the ADC > registers as it seems, as they never change their RESET state. When reading > them directly after setting them and directing the output to uart, there is > no change. I'm not exactly sure if this is compiler or linker related, but to > the best of my knowledge I did everything according to the handbook [2]. > > The affected registers are: > ADC1_CR1 > ADC1_CR2 > ADC1_CR3 > ADC1_SQR1 > ADC1_SQR2 > ADC1_SQR3 > ADC1_SQR4 > > You can find my sourcecode here [3], SDCC version is 3.6, Win7. > The sdcc command is "sdcc -mstm8 --std-c99 usart.c". > For flashing I am using ST Visual Programmer 3.4.0. > > I hope this is actually a bug in the compiler or linker and not a user error, > so I won't waste your time. > > Regards, > Timo
Well, this code looks like you don't set ADON (lowest bit of ADC1_CR1) to 1, while most ADC registers cannot be writtenwhile ADON is 0. Philipp ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
