Resolved! STM32H7 I2C with DMA, no ACK after last byte
When reading the I2C bus with DMA it is followed by a NACK. Do i have to clear it somehow in the DMA1_Stream0_IRQHandler ?
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need help designing a car CAN sniffer using STM32 446RE and MCP2551
i have written a simple program that should send "NO MESSAGE!" to the terminal if there are no CAN messages or "A NEW MESSAGE ARRIVED!" and then the CAN message itself through UART2. My idea is that since all car sensors are connected to the same CAN...
Current consumption in STM32L072 very high
Hi guys!A have a problem with power consumption, when I try to put the microcontroller in low power sleep, the current consumption is around 8.5mA, when I expect around 20uA.I'm using a custom board, but only a single LED is connected, capacitors and...
CAN module stops working in STM32F205 from power on to 1 hour with No can data feed
HI, we are using STM32F205ZGT7. we are using CAN channel 1 for exchanging the information's in vehicles. During our in house testing from power on to about 1 hour the MCU CAN module stops receiving the data after long inactivity time of about 1 hou...
Resolved! STM32F407IGT: I2C3 is working as expected but I2C1 and I2C2 have problems
I am looking for an expert to help me with I2C bus on STM32F407IGT. I2C3 is working as expected and I would like to make working also I2C1 and I2C2 which I have problems with.I am using the same initialization regarding registers and I can see the ri...
Generate a frequency burst
Hello,i try to implement a 40kHz frequency burst with my NULCEO STM32F411RE. Until now i toggle the GPIO continuously in the HAL_TIM_PWM_PulseFinishedCallback function. But now i have to implement a start Trigger to do a small 40kHz burst. In the att...
STM32F407 RTC skips a second on subsecond rollover
It appears that there is some unusual behaviour taking place when I read the time shadow register from the RTC. My application reads the RTC every 1000 systicks and prints the information.When the subsecond component rolls over to greater than the s...
Are the 6 fast channels on an STM32h742 ADC preconfigured by default as fast or I need to configure them as fast?
I have the package LQFP100, so the Application Note specifies that there are 3 fast channels, but the Reference Manual says that the first 6 input channels are fast channels. How is this? If I have to configure them as fast how can I do it or where c...
IS STM32 chip producing now?
Now in China, all distributors don't have STM32F105RBT6, but if we ask from sub-distributors, most of them have massive in stock, just the price is very very high, about 14usd. So, please tell us when the supply can be normal, because if we switch ch...
