Posted on November 24, 2017 at 02:59On F446RC, sysreset does not put bit 19 into default setting of 0, its stuck on 1 if 1 is written previously.Procedure to set and clear bit:RTC->CR = (0<<19); //Clear bit19, 512hz modeRTC->CR = (1<<19); //Set ...
Posted on October 04, 2017 at 04:21STM32F4xx1: Do 8bit DAC mode have same specifications as the 10bit mode?2: The 3.3V / 1.5MOhm = 2.2 µA load for 1% accuracy as spec'ed in manual is for internal buffer off , i had assumed no load at all would g...
Posted on August 24, 2017 at 04:50In STLink settings menu we can chose JTAG or SWD but which JTAG and SWD mode is it?Full SWJ (JTAG-DP + SW-DP) - Reset StateFull SWJ (JTAG-DP + SW-DP) but without NJTRSTJTAG-DP Disabled and SW-DP EnabledTrying to fig...
Posted on August 21, 2017 at 03:58Surely this issue has been beaten to death already?SPI3:Are there any known 'end of byte/word transmit' function (soft/hardware)working on SPI3 in master mode? Actually in 'any' mode, im just doingsimple plain peri...
Completely re do the entire forum back to being usable which means current forum software as it just piece of crap! What utter piece of bull crap this forum format/software have become! Nothing works compared to the original forum back in 2007 who wa...
Posted on February 16, 2018 at 15:52Branching are defined with costs of some sort on most micros. Why not try benchmarking on a CCM RAM device,(F303/F407 etc) RAM that sits on CPU bus directly?
Posted on February 16, 2018 at 15:37Thats interesting where the border line goes between a MCU and a SoC. Imagine its quite floating since a ST32Fxx is a lot simpler (yet cumbersome) then a Sitara AM3358 (example).
Posted on August 31, 2017 at 01:39
MISO must be configurated in MISO mode(AF).
>>> gpio_init.GPIO_Mode = GPIO_Mode_IN; // MISO must be configured as HI-Z IN, not AF!!
Posted on August 28, 2017 at 03:31Right, had completely forgot , thanks Clive and Vangelis!Late night edit:Went back to SPI and spoked around a bit more whywhile((SPI3->SR & SPI_SR_BSY) !=0) {} //Test BSY if it's 1, if 0 then exit test.didnt work a...
