Posted on August 09, 2015 at 20:09
I'm sitting here pulling my hair out because I can't figure out what's going on, I've tried everything I can think of. I'm using SPI to communicate with an offboard periph, When I write to the data register the...
Posted on August 07, 2015 at 03:03
Hello all,
I'm trying to communicate with a nokia 5110 LCD. The nokia 5110 has a slave select bit that I am setting using a GPIO pin (because I'm not entirely sure how the NSS bit for SPI works). My probl...
Posted on August 06, 2015 at 16:20
Hello all,
I'm trying to communicate with a nokia 5110 LCD. The nokia 5110 has a slave select bit that I am setting using a GPIO pin (because I'm not entirely sure how the NSS bit for SPI works). My problem ...
Posted on July 20, 2015 at 00:05Hello all,I tried searching for a bit but couldn't find anything pertaining to my question.I'm trying to set up an external interrupt but I don't understand why exactly we clear the pending bit in EXTI->PR and not in ...
Posted on August 11, 2015 at 18:52I'm thinking that my problem is that the shift out register isn't stepped through in debugging mode. So when I step through my code, I load the data into the shift register and by the time I step to the next stateme...
Posted on August 07, 2015 at 15:58
So I found what you were talking about in the reference manual. I tried adding a wait loop to wait for the TXE flag, but that flag never seems to go low in the first place. This seems to imply that data is writ...
Posted on July 20, 2015 at 04:47So if I'm understanding correctly, the NVIC handles interrupts internal to the MPU. Since I'm interrupting external to the Cortex m4, at the periph, the NVIC isn't set up for that. I go to the peripheral and clear th...
