Posted on December 04, 2014 at 16:23Hi.
I'm using STM32F101RBT6 in a project, with custom PCB. I need to remap the SPI1 signals to pins PB3/4/5 (which would be SPI3, only STM32F101 doesn't have one). I also use remap to disable JTAG to free-up PB3/4 for this. The ''normal'' SPI1 GPIO pins are in use for something else - driven directly by software.
I find that I can output SCK on PB3 as expected, but MOSI on PB5 seems stuck high. All register contents seem correct when viewed. If I disable remap and set the required pins to AF mode I can get the expected outputs from the SPI1 pins (PA5/6/7). I can also set PB5 to GPIO output and drive it correctly.
I am using SPL version 3.4.0 and Ride7 IDE.
Are there any silicon or library bugs I should be aware of?
Any clues?
many thanks,
Mike.
