1 ACCEPTED SOLUTION
Accepted Solutions
По�?ле запи�?и в пам�?ть
Hello,
when one of the devices is turned off, the behavior of the CS (NE3 or NE4) signals becomes normal. disconnected separately the memory on the NE 4 logical analyzer; SWITCHED NORMALLY; turned off the screen (by setting comments on the screen); NE 3 switching is normal (attachment). The combined operation of the screen and memory causes a single change in the signal from 1 -> 0 at the outputs of NE 3 and NE 4
Changed the initialization order, at the beginning of the screen then the memory. The screen selection signal NE 4 now works fine. BUT the memory selection signal does not work. In the attachment, the screen from the moment the microcontroller resets.
Maybe something is wrong with the memory access? I give all the pieces of the appeal code:
void fsmc_sram_test_1(void)
{ u16 temp=0;
fsmc_sram_test_write(0x0000,0xBBAA);
temp=fsmc_sram_test_read(0X0000);
LCD_ShowxNum(60,190,temp,6,16,0);
printf("Data SINGL:%x\r\n",temp);
}
/*****************************************************/
void FSMC_SRAM_WriteBuffer(u16* pBuffer,u32 WriteAddr,u32 n)
{
for(;n!=0;n--)
{
*(vu16*)(Bank1_SRAM3_ADDR+WriteAddr)=*pBuffer;
WriteAddr++;
pBuffer++;
}
}
/*****************************************************/
void FSMC_SRAM_ReadBuffer(u16* pBuffer,u32 ReadAddr,u32 n)
{
for(;n!=0;n--)
{
*pBuffer++=*(vu16*)(Bank1_SRAM3_ADDR+ReadAddr);
ReadAddr++;
}
}
/*****************************************************/
void fsmc_sram_test_write(u32 addr,u16 data)
{
FSMC_SRAM_WriteBuffer(&data,addr,1);
}
/*****************************************************/
u16 fsmc_sram_test_read(u32 addr)
{
u16 data;
FSMC_SRAM_ReadBuffer(&data,addr,1);
return data;
}
