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USART3 Interrupt not being fired

Posted on May 24, 2017 at 14:37Hey guys,I'm using a serial terminal to communicate with USART3 on an STM32F1 via an FTDI USB-UART converter cable. I am successfully receiving data from USART3 in my serial terminal but when I try to send data to it t...

Resolved! Need details about STM32 I/Os

Posted on May 24, 2017 at 18:24For my design i am already using STM32F429BI--LQFP208 package, Now i am looking to replace this with STM32F777BI-LQFP208, both are pin compatible..Question: In the data sheet of STM32F777BI Its mentioned that GPIO'S=15...

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Generate USART Tx DMA using timer expire on backend without any CPU intervention like DAC with Timer?

Posted on May 25, 2017 at 08:47Hi,    Generally i do likeOption 1)unsigned char tmp;unsigned char *ptr='Hello World!';for(tmp=0;tmp<10;tmp++){   HAL_UART_Transmit(&huart1,ptr,strlen(ptr),100);   HAL_Delay(10); //10ms}Option 2)Start TIM2 ,which gener...

Hobbyist by Associate II
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STM32F407 + LwIP + FreeRTOS: ethernet fritz

Posted on May 25, 2017 at 08:24If CHECKSUM run by SOFTWARE ethernet fritz in some packets (spam).//#define CHECKSUM_BY_HARDWARE in lwipopts.hEthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_SOFTWARE; in ethernetif.cHow can i fix it?

pestov by Associate III
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Resolved! STM32F3xx device driver / lib lack

Posted on May 23, 2017 at 18:02I dont know I must be wrong but I didn't find function call to change the dutycycle of a pwm so I wrote this and I added it to stm32F3xx_hal_tim.c/**  * @brief  Set the PWM DutyCycle.  * @param  htim: TIM handle  * @pa...

o gaste by Associate III
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Resolved! OPAMP output: VDDA overconsumption

Posted on May 22, 2017 at 15:35The STM32L471 Errata document states that:  An overconsumption can appear on VDDA in the following conditions:• a voltage VPAD is applied on PA3 or PB0 with VDDA+ 50 mV < VPAD < VDDA + 600 mV ...Our application uses ...

Chris1 by Senior III
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How to receive a lot of characters from USART???

Posted on May 22, 2017 at 14:13HI I want Receive characters from USART. I don't  know how much characters will be sentand the data that will be sent is too much. in interrupt mode i will receive amount interrupts and it is not good(for example 1000 ...

l90mehdi by Associate II
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relocation truncated to fit: R_ARM_THM_JUMP11

Posted on May 24, 2017 at 14:34Hello, I want to make a branch from startup file like this :Default_Handler:  b exception_panic  .size Default_Handler, .-Default_HandlerBut i'm getting this error : relocation truncated to fit: R_ARM_THM_JUMP11 agains...

Floating and printf not working

Posted on May 22, 2017 at 14:13Hello,I would like to print floating variable with printf but it is not working. i'm using a stm32l073 MCU that does not have any FPU. I'm activating  -u _printf_float  in my llinker but it doest not change anything. A...