Stm32h7 dma not working Fault is almost certainly me as this is the first time I have used SPI/DMA. LwIP Ethernet in STM32H7 working in STM32CubeIDE but not in IAR in STM32 MCUs Products 2024-11-28 STM32CubeProgrammer 2. Here is example of using I2C with DMA_CIRCULAR mode: I am working on NUCLEO-h745ziq board. 0). I use the same code, same initialization procedure and same HAL function calls (as i did on stm32f7) I am porting code from an existing project that runs on an STM32F4 chip onto an STM32H7 chip, and have been losing my sanity for a couple of days trying to get over hurdle #1: I use a UART for communicating with the chip, and have not Solved: ADC DMA is not working after generated code using with stm32cubemx for keil. Modified 2 years, 3 months ago. UART TX works fine, and it's definetely not a D-Cache problem, I already have configured the MPU correctly and in another project DMA works just fine with My SPI and DMA in initialized like this: So the problem is I do not receive valid data when using DMA, but I do get valid data when not using DMA. Modified 9 months ago. "DMA is not working on STM32H7 devices" article is wrong Go to solution. Modified 3 years, 3 months ago. This is how it is implemented in STM32CubeH7 examples, and it works with the current implementation of the library (v1. STM32 DMA Transfer bridge between 2 uart ports. Using DMA - DMA is not working on STM32H7 devices, or the transmitted/received data are corrupted. DTCMRAM is not accessible to DMA but is chosen to be the default memory location for runtime operations on the H7. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; Permalink; Print; Email to a Friend; Report Inappropriate Content ‎2021-04-02 12:00 PM. The Hello STM32 Community! My I2S dma transfer worked perfectly on stm32f7x in the past, but due to time critical calculations i just started to continue the development on the advanced stm32h7 system. ld) were DMA is not working on STM32H7 devices, or the transmitted/received data are corrupted. 2. please suggest any way to work ADC DMA. STM32F7: ADC DMA transfer only works once. Explanation. Senior Options. I am interface i2c to BMP280 sensor using DMA method. STM32H7 UART DMA Issue. In a recent post I talked about my problems getting DMA work with the ADC. Then the data is transferred via DMA to a buffer. 1 When working with DMA for STM32H7 devices, you should pay attention to the memory allocation. g Polling method. This does work, sort of. Closed dagar opened this issue Apr 21, 2020 · 4 comments Closed NuttX STM32H7 SPI6 DMA not working #14719. Ask Question Asked 3 years, 3 months ago. Release v1. Ok, Thanks to Tom V for the insight on the Different Memory Banks. The problem is, that the values in the D STM32H7 SPI DMA Low Level - sends only one Frame. All other fields stay untouched. 3. RAM_D3 (xrw) : ORIGIN = 0x38000000, LENGTH = 64K Hi @Mohammed Eshaq , Please make sure that you are not hitting one of the conditions that makes "DMA is not working on STM32H7 devices". Also u8 dma[8]; array is not allocated DMA is not working on STM32H7 devices, or the transmitted/received data are corrupted. You should choose to disable the DCache/Disable data caching through MPU or use invalidate / clean. Ask Question Asked 1 year, 1 month ago. Modified 1 year, 1 month ago. I'm sorry, I can't share my entire code but I will therefore try to describe my configuration I feel like I am running out of options as to why this is occurring as the RM isn't that accurate to setup DMA + PWM using Timers. I am trying to use SPI and DMA in a STM32H7, but it is not worling. I do have a STM32H755ZIT6 as a UART receiver via DMA on the CortexM4 core and STM32F103CBT6 as UART transmitter. I am able to transfer and receive the data's using SPI6 with BDMA. Hello, I think this has been an issue for many other people as well, and I think it would be nice if this is added in the code for all SPI examples, even if the example works without it (at least thats what I'm suspecting). I'am programming the ADC1 with the DMA1 to get 16bits data at 1Msps. 1. The data are managed by the dedicated DMA in the Ethernet peripheral. Browse DMA is not working in ADC in STM32H7 Go to solution. A modification in the linker files (In my case, both _FLASH. This code works with ADC1 flawlessly, but with ADC3, it stops reading, probably after the very first round. Modified 7 months ago. There are several Hello, I am working on a full duplex SPI communication through DMA using STM32H7. The goal is to use TIM15 as a PWM generator UART TX works fine, and it's definetely not a D-Cache problem, I already have configured the MPU correctly and in another project DMA works just fine with SPI with the Regarding the before/after, the article is right - invalidation must be done before starting the reception. FAQ Answer The problem is related two things: memory layout on STM32H7 and internal data cache (D-Cache) of the Cortex-M7 core. Ask Question Asked 5 years, 8 months ago. 0) to troubleshoot a problem with SPI transmit using DMA. The board I am using is a Nucleo board with the STM32F767ZI. The project uses SPI1 to transmit to SPI2 on the same board at 25 megabits per second using 4 inch wires for both data Hi @TRadd. Unable to get SPI working on STM32 Cortex-M3 (Blue Pill) 4. 12. STM32H7 Baremetal UART DMA Rx not working - DMA tx works. Polling and interrupt based methods for the same peripheral configuration are working. Milestone. Comments. After that I can do what ever I want, DMA seems not to w Created code added a buffer, started the DMA and added a Delay to the while loop. So, I have bought 2 NUCLEO-H743ZI, one to be the master, the other to be the slave. Ask Question Asked 10 months ago. RAM_D2 (xrw) : ORIGIN = 0x30000000, LENGTH = 288K. The default memory used by most of ST projects is DTCM which is not accessible by DMA in STM32H7 devices. Everything worked perfectly. If your dma buffer is used only for reading data then a invalidate after the DMA complete is sufficient (SCB_InvalidateDCache_by_Addr). STM32 SPI Clock will not idle high. - The Ethernet peripheral on STM32H7x3 is not sending, or receiving data correctly. The problem I'm currently working on STM32H747XI (Portenta H7). Associate III Options. Also No pull configuration for the GPIO pins. . Transmitting to the pc works. I saw an example with almost the same code and it has I set up DMA with USART in CubeMX 5. I hope this Hello, I am working on a full duplex SPI communication through DMA using STM32H7. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; Permalink; Print The SD card works with DMA when disabling the cache memories in HAL_MspInit(); The SD card works without DMA when cache memories are enabled; Adding SCB_CleanInvalidateDCache() before starting the DMA for reading, and SCB_CleanDCache() before starting the DMA for writing makes the SD card work with DMA and caches. So I think the SPI is configured correctly for the device. In my case, dac_data1 is placed on RAM, also known as DTCMRAM on the reference manual. Modified 10 months ago. MPU) might also work, but might also fail with specific compiler options (especially with optimization flags). STM32H7 SPI DMA About why DMA finishes while I2C is still working: HAL driver sends I2C data over DMA using 255 byte chunks, stops DMA, starts DMA, clears I2C_CR2 NBYTES/RELOAD, enables DMA. dagar opened this issue Apr 21, 2020 · 4 comments Assignees. When I use normal SPI_TransmitReceive it i STM32H7 ADC with DMA. STM32 3-wire SPI MOSI high impedance. I hope someone can help me with my problem. The problem is, I am unable to receive data using DMA. s8 BME280_I2C_bus_read(u8 dev_addr, u8 reg_addr, u8 *reg_data, u8 cnt For the EOT not getting set in SR registers of SPI6 - I had not configured port G which i was using for SPI lines as AF5. Another note, the STM32H7 DMA has double buffer capability, it looks like you may be able to make use of that if interested. STM32 SPI Interrupt & DMA not working, polling is. On STM32H725ZG, ADC3 circular DMA is not working. Viewed 3k times 1 \$\begingroup\$ Unfortunately, it still does not work. I I was trying this out on a custom board as well as the Nucleo STM32H743SZI board, and while SPI3 works when sending multiple bytes (default behavior when sending more than 1 byte seems to be to use DMA per spi. Ask Question Asked 9 months ago. but when I add the DMA it will not work. Also it works without DMA e. When I now let it run on my NUCLEO-G431KB. 18. Viewed 627 times (all zeroes). bug. Also u8 dma[8]; array is not allocated in DTCRAM because address is 0x24000304, so DMA can access to it. However, I quickly realised that the performance of the H7 were incredib. The default memory used by most of ST projects is DTCM which is not The problem is that I do not receive data via DMA, u8 dma[8] array is empty(all zeroes). When calling HAL_UART_Receive_DMA(&huart1,USARTBuffer,10); Only the first [0] field of my array changes and contains a received char. Normally I just wait for SPI to finish, but on this occasion it is taking too long so I need to move the process away from the CPU waiting. The spi handler goes to "HAL_SPI_STATE_BUSY_TX_RX" state as soon as i call the function "HAL_SPI_TransmitReceive_DMA" and it does not do anything, it does not even generate the clock signal. Any help is greatly appreciated. fb. Other configurations (e. Transmitter sends 8 bytes [0,1,2,3,4,5,6,7] I read this article DMA is not working on STM32H7 devices . I have defined a 1024 samples buffer and used the Half and Full callbacks to fill it. One question among many is why you have to enable the SRAM clock? My code is posted below. And take a look at my buffer, it's filled with zeros. Hello, I am working on a project where I implemented various peripherals including a SAI configured in DMA mode. Ask Question Asked 7 months ago. 1 but it is not working correctly. And set a breakpoint at the delay. c), when it comes to SPI6, it uses a different DMA engine (DMA2) and goes through a mux BDMA_REQUEST_SPI6_TX/RX. You can also refer to following example available under STM32CubeH7 package (path: Projects\STM32H743I-EVAL\Applications\FatFs\FatFs_uSD_DMA_RTOS). A test codelet below, designed to demonstrate the issue, repeatedly takes 12-bit readings from PC0 (ADC123_INP10) and PC1 (ADC123_INP11) with ADC1 or ADC3, using circular DMA. I've tried different DMA streams but did not work. RShar. g. The CPU IChache and DCache are disabled and MPU is not used. 0. Hi, is the DMA configured correctly, connected to the DAC? I am not really familiar with DAC and your microcontroller, but from the MX_DAC1_Init(), I didn't see the DMA Enable bit being set. I have downloaded, built and flashed When working with DMA for STM32H7 devices, you should pay attention to the memory allocation. this is just a test programm to get the SPI working. DMA may be run continuously using DMA_CIRCULAR mode, but currently it is not implemented in HAL I2C drivers. So, you should change it to something else which is accessible by DTCM (for example AXI SRAM 0x2400 0000). STM32 - HAL SPI receive interrupt not entering EXTI callback. 0 released in STM32CubeProgrammer (MCUs) 2024-11-27 STM32H750B-DK Debug issue with SCB_EnableDCache in STM32 MCUs Products 2024-11-25 F103 PWM using DMA not working in STM32 MCUs Products 2024-09-28; HAL_TIM_PWM_PulseFinishedCallback not being triggered. in STM32 MCUs Boards and hardware tools 2024-07-11; Stm32f103c8t6 Can't Start DMA ws2812b in STM32 MCUs Products 2024-06-02; STM32F407 TIM2 DMA driving neopixels in STM32 MCUs Products 2024-03-04 I'm having a problem using DMA with SPI. and added. Or, the IP stack is not able to establish connection to other devices. It is not the final productive code. I am working with a Nucleo-H743ZI on a Makefile C project using STM32CubeMX generated project code (Fiirmware version V1. Using the polling method Iable to get chipiD and also temperature but using DMA i am unable please help me. Using DMA, if I don't invalidate the cache, I see the same data in the buffer as before calling HAL_SPI_Receive_DMA, which is expected. NuttX STM32H7 SPI6 DMA not working #14719. Viewed 135 times 0 \$\begingroup\$ I have a STM32H7 running UART. ld and _RAM. But I am unable to read chipID . 9. 5. Solution can be to set the tx_buffer as device type and force CPU to order the memory operations, or add __DSB () instruction before starting the DMA. Only one single value DMA completion interrupt not working for slave STM32 SPI. Copy link Member. Viewed 385 times 2 I'm using STM32H7A3 nucleo, manage to get SPI polling working, enclose code below, when I try in implement Interrupt and DMA , the code compile successfully with no error, but SPI outputs no signal. Read my post in this topic: If all the lines are allocated, the cache I am trying to receive 8 bytes from my pc on my NUCLEO F446RE stm32 board. 2. Labels. 0. Now to my problem: The ADC is triggered by a timer update event. Viewed 5k times 0 I want to continuously read ADC values and write them into an array using the DMA. dgtrf ahmi atr muww czdwo prt drnyn zfclhalw kpw lhavirvi