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Malloc failed in RT1060-EVK project CSI_RGB565

Question asked by 钟 文 on Nov 9, 2018
Latest reply on Jan 11, 2019 by 钟 文


We are evaluate RT1060 performance with RT1060 evk.

The first step we have to do now is to use the OV7725 and caputre the YUV422 data.Then extract the Y data to the buff. So will use malloc to apply for a buffer, and the buffer address should be in 0x8000xxxx。

There is no problem when using malloc(100), but malloc(480*272) will fail. With print, malloc(480*272) return 0, but malloc(100) will return 0x80000300. Our project base on the example CSI_RGB565 build with IAR ,and configuration is sdram_debug. Evk board have 256Mbit SDRAM, what cause this issuse happend?

Did I not open SDRAM in the code?

In fsl_commom.c, there is SDK_Malloc but the same result. Do I create memory management myself? 


uint8_t *recontent =(uint8_t*)malloc(100);
uint8_t *src = (uint8_t*)malloc(480*272);
printf("recontent 0x%x\r\n",recontent);
printf("src 0x%x\r\n",src);



thanks !