Posted on July 25, 2012 at 01:46Hi, I am cery confuse about how to set DMA parameters. I would like to capture images from camera using DCMI module. I don't understand Burst and BufferSize params of DMA. I would like to capture QCIF (176x14...
Posted on July 23, 2012 at 02:15
Hi,
I am now trying to integrate my STM32Discovery board with OV7670 camera module without using any external ram from LCD. However I found a problem and I cannot get any data. I have tested it in many ways f...
Posted on July 18, 2012 at 04:37
Hi there,
I tried to use my STM32f4 Discovery (164MHz) to read data from OV7676 camera (No FIFO) without using DCMI module. I just used normal gpio pins to read 8-bit data from the camera along with VSYNC, HR...
Posted on July 11, 2012 at 09:25Hi, I trried to understand how to calculate pwm output from example that comes with Stm32f4-Discovery-FW1.1.0. The file is in Project > Peripheral_Examples > TIM_PWM_Output > main.cThis is the most confusing part in...
Posted on February 20, 2015 at 18:40agree. so confusing. i am not sure that it is possible that i connect two SDO line together since i enable / disable Accere/Gyro and Magnet seperately.
Posted on July 25, 2012 at 01:50and this is my DCMI config part; DCMI_InitStructure.DCMI_ExtendedDataMode = DCMI_ExtendedDataMode_8b;//bit[11:10]: 8bit-data/pclk DCMI_InitStructure.DCMI_CaptureRate = DCMI_CaptureRate_All_Frame; //bit[9:8]: Frame...
Posted on July 24, 2012 at 02:57I change VSYNC polarity and HREF polarity to DCMI_VSPolarity_LOW and DCMI_HSPolarity_Low, then the DCMI overflow interrupt is gone. I aslo change the format of a picture to QCIF (176x144) pixel per frame. The resul...
Posted on July 23, 2012 at 16:34Now I change my code DMA_InitStructure.DMA_BufferSize = 1; <------------------- ONLY one byte transferIt's still overflow in DCMI interrupt.I have no idea why the interrupt is set.Thanks
