MCB251 evaluation board

hi, i'm having troubles to connect the keil uVision3 V3.8 to the mcb251. i'm using the following configuration: IC1 -> AT89C51RE2 IC4 -> empty com1 , 38400 , using 24Mhz crystal RTS: active...
MCB251 evaluation board

hi, i'm having troubles to connect the keil uVision3 V3.8 to the mcb251. i'm using the following configuration: IC1 -> AT89C51RE2 IC4 -> empty com1 , 38400 , using 24Mhz crystal RTS: active...
M7 atomic operation faults on non cacheable memory

I'm trying to make one region of SRAM non cacheable for DMA buffers. But what I have found is that when I do that, the first atomic operation bus faults (eg RTOS mutex). Here's an example where I made...
M7 atomic operation faults on non cacheable memory

I'm trying to make one region of SRAM non cacheable for DMA buffers. But what I have found is that when I do that, the first atomic operation bus faults (eg RTOS mutex). Here's an example where I made...
operating leds not on a dev board.

I see the examples of how to use the LEDS on the Keil examples but I'm not able to do this on my own board. I tried something like GPIOC->MODER |= (GPIO_MODER_MODER8_0);//output GPIOC->OSPEEDR...