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Resolved! How to enable QSPI PSRAM as data memory

Hi:I use STM32L4P5RG with APS6404L-3SQR to develop GUI.I want use QSPI PSRAM as data memory for GUI.Now, I enable QSPI PSRAM as data memory as follows:1.configure QSPI PSRAM , SPI with NVIC in CubeMX2. add PSRAM (xrw) : ORIGIN = 0x70000000, LENGTH = ...

Resolved! STM32G0B1 USB clocking

I am working with am STM32G0B1CB for USB communications, using Zephyr as my OS.  I am trying to have multiple CDC ACM serial ports, so that they will show up as /dev/ttyACM0, /dev/ttyACM1... on Linux.  Everything seems to work fine if I have only one...

Screenshot from 2024-11-02 21-07-56.png
rm5248 by Associate II
  • 1329 Views
  • 4 replies
  • 0 kudos

STM32G474 HRTIMER ADC Trigger

I'm trying to configure the ADC to read to values at a specific time in my system that uses the STM32G474.I have two channels of peak current mode control using the HRTIMER. The outputs are reset from either a comparator event or max duty cycle compa...

DamageG by Associate II
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  • 3 replies
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Resolved! STM32F103C8 - 8Mhz 33pf xtal ?

The datasheet suggests load of 20pF .Due to size constraints, I hope to use https://jlcpcb.com/partdetail/318914-CSTNE8M00G550000R0/C341522Most 8Mhz resonators of this size seems to have 33pF

pilot by Associate III
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  • 7 replies
  • 6 kudos

STM32G0 reseted after GPIO interrupt happened

I'm using gpio interrupt inside there void HAL_GPIO_EXTI_Rising_Callback(uint16_t GPIO_Pin){static uint32_t push_time;if(GPIO_Pin == IS_FUSED_Pin){pin_int_now = HAL_GetTick();if(fuze_push_time + DEBOUNCE_INTERVAL < pin_int_now){LED_Green_On();fuze_pu...

Screenshot 2024-11-02 at 15.23.02.png
Bigdan by Associate III
  • 1508 Views
  • 7 replies
  • 1 kudos

Array initialization

I know that the question will be trivial, however, I do not understand why the instruction uint8_t dataRx[4] = { 1 }; does not initialize all the elements of an array to 0 ... but only the first one:I have programmed little in the last while so I wil...

stm32 array 2.png
luke514 by Senior
  • 1140 Views
  • 2 replies
  • 5 kudos

SPI communication (Receive Only Master)

We are trying to develop a device that uses SPI communication (Receive Only Master).Are there any sample programs for SPI communication (Receive Only Master)?Which should be executed first: "Receive Only Master HAL_SPI_Receive" or "Transmit Only Slav...

STM32L0 STOP and STANDBY mode.

I have some questions. I read that STOP mode has a "RAM retention", so when it wakes up it the whole data is still intact (not cleared).When the RAM retention is off then the data is gone when it goes to STOP mode. So when it Wakes up does it restart...

Xenon02 by Senior
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  • 13 replies
  • 4 kudos