Ask questions, find answers, and share insights on STM32 products and their technical features.
Posted on March 18, 2014 at 20:08 Hi, I use LWIP and FreeRTOS like WEB server. It's OK. But now, I want send data to otger page for example by GET. Like this: http://www.page.com/p.php?json=1234 Can you help me please? Here is my co...
Posted on January 30, 2014 at 10:51The original post was too long to process during our migration. Please click on the attachment to read the original post.
Posted on July 23, 2016 at 02:50Does STM32F103RB use switched capacitor ADC circuit which produces some noise in the process and requiring source impedance to be 'not too high' or else accuracy will degrade? The signal is single channel and no MUX...
Posted on July 23, 2016 at 02:44What configuration parameters (clock freq, sampling clock count, etc.) can I tune in order to minimize ADC reading noise when sensing a relatively low speed signal? I am currently getting about 10 to 20 LSB differe...
Posted on July 22, 2016 at 14:15Does STM32F103RCT support flash read protection? I cannot find any introduction on datasheet. Is it only available on XL density 103?103RCT is high-density flash device. In CUBE nucleo package, I can not find code abo...
Posted on June 05, 2015 at 03:03Wrote some code for STM32F429I-Disco that writes data in flash but it denied to work in USB receive function. ''static int8_t CDC_Receive_HS(uint8_t*Buf,uint32_t*Len)'' But it did work in main. What can it be? uint32_...
Posted on July 23, 2016 at 01:31We are using an STM32 on a board, and have issues with its sleep current. Under normal 2 x AA voltages the system works well, but as part of our testing we take it higher. We have found the current draw on the STM in...
Posted on July 22, 2016 at 22:31Is it true that 2 to 3% accuracy is required? Nucleo F103 has no crystal. Nucleo F401 has 32kHz crystal
Posted on July 22, 2016 at 23:17Hi, I have an example DAC program with a sine table of 128 points. It generates a signal at 5KHz with no problem. However, it stops working at 4.6KHz when adjusting the frequency down. It uses PA4 output and TIM 6. My...
Posted on July 21, 2016 at 19:37I am using above hardware, HAL STM32CubeMX and Keil. In datasheet DocID13587 Rev 17 page 29 and also CubeMX, pin 17 PA0 is specially marked as SYS-WKUP. What is special about this pin? What can it do 'specially' whi...
