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Posted on April 12, 2015 at 16:50Hello everyone! I am using STM32F103RET for my project. I need to communicate by SPI with a low speed digital device with the speed of at most 1KHz clock. At the same time, I need to have my own cpu clock as high as ...
Posted on April 14, 2015 at 15:33Hi,I want to use external SRAM with the controller STM32F429. i want to make use of internal supervisor circuit, which is used to power the internal RTC and internal 4Kb SRAM, to backup the data in external SRAM. for...
Posted on April 14, 2015 at 13:47I have setup a timer in PWM input mode. It all works well. I have setup the prescaler and period counter so I can measure down to 10 Hz. But if the input frequency is too low (< 10 Hz) the timer will wrap around.If I...
Posted on April 14, 2015 at 21:51 Hello, I have function fifo_read(RxFifo, &rx, 1) which reads byte from FIFO buffer. I want to use this function in two different interrupt handlers. I have declared rx variable as fo...
Posted on April 14, 2015 at 23:01I've made several custom STM32F4 boards.Never any problems, until now, when my JLINK detects my board ONLY, if I press reset button before I press detect device in Keil uVision.When I press download button I got erro...
Posted on April 14, 2015 at 17:03How can I disable RTC 512Hz signal and return PC13 as I/O ??I programed the PC13 as ''GPIO_AF_RTC_50Hz'' to calibrate the 512Hz signal of internal RTC, but now I cant disable it to use PC13 as I/O, The STM32F205 doe...
Posted on April 13, 2015 at 09:08We are experiencing a very annoying issue... we have a portable application, STM32L151, DVdd=3.0 regulated via an LDO, lithium battery. Randomly, the MCU freeze and the nRST does... nothing! We need a full power cycl...
Posted on April 10, 2015 at 20:09 The original post was too long to process during our migration. Please click on the attachment to read the original post.
Posted on April 14, 2015 at 04:51I am developing a HID USB with STM32F107, and iam currently using STM32_USB-FS-Device_Lib_V4.0.0. 1. My problem is that i dont understand clearly about USB_DISCONNECT feature in this MCU.2. I see in the library, ST d...
Posted on April 12, 2015 at 05:04Hi, I am trying to use UART5 on the STM32F103, 100 pin device. As per documents Tx and Rx pins are PC12 and PD2 respectively. I enabled clocks, initialized the port and when I try send a character (code below) U...
