the problem of psp/uart sample

rong gao

Now, i have a problem of example : DVDVSDK\dvsdk_1_01_00_15\psp_1_00_02_00\pspdrivers\drivers\uart. when i run this example with emulator, it works fine. Then, i download it to flash , when i use hexAIS.exe to convert *.out to *.hex , the hex file will work fine when i boot from flash. However , when i use hexAIS.pl to convert *.out to *.bin file, the program will work fine , uart can not work!! It can not send and receive. Did you faced this problem yet?

my prams: genAIS.pl -bootmode emifa -datawidth 8 -cfg evmdm6437.cfg -i *out -otype bin -o *.bin , i add led blink program at the front of uart sample, and i am sure my program works fine , but the uart in the program has exception. can somone help？

envionment: : DM6437, psp_1_00_02_00

over 13 years ago

0 Renjith Thomas over 13 years ago

Guru 31670 points

UART controller might not be powered up or clocked. This might be performed in your GEL because of which it works with emulator, whereas it might not be taken care. When your code accesses any of the UART registers, access will fail, if its not powered up.

0 rong gao over 13 years ago in reply to Renjith Thomas

Intellectual 355 points

thanks for your reply. I have paid attention to "power up" before, i added "sysModuleRegs->VDD3P3VPWDN &= (~(0x400u));" "EVMDM6437_PSC_enableAll( );" to enable my psc and power, but i still can not work.

the point is the same code which i use hexAIS.exe convert it to*.hex, then flashburn to flash it. and it will work perfect !!! When i use hexAIS.pl convert it to *.bin, my program works well , only the uart does not work!! oh god

0 Renjith Thomas over 13 years ago in reply to rong gao

Guru 31670 points

Rong,

Can you compare the .hex binary manually with bin file opened in hex editor? What is the size of both the files?

0 sriram garikipati over 13 years ago in reply to Renjith Thomas

Prodigy 220 points

probably you need to verify the PLL configuration part or evmdm64xx.cfg file. , you can check/modify these register values just before your UART program called.

regards,

Sri

0 sriram garikipati over 13 years ago in reply to sriram garikipati

Prodigy 220 points

its not PLL its PINMUX0 or PINMUX1 to configure UART. Sorry for that, Its quite a while since I worked on DM64xx. you check these values of your working code and compare the same with your evmdm64xx.cfg file.

0 rong gao over 13 years ago in reply to sriram garikipati

Intellectual 355 points

As you reference in *.cfg file(hexAIS.pl which is writen by perl, can generate *.bin file), it has three args: pll, ddr, emif, and no pinmux , no psc. Then i added the pimux and psc in the program to init my codes by myself. But it still does not work...

But in the *.ini(hexAIS.exe which generates *.hex file), there have pll ,dll, emif, pinmux, psc parameters, and *.hex format file which is downloaded to flash can work well as i refered before.

At last , i choose to write a small software, which is used to parse *.hex file(which generates by hexAIS.exe ) , and the software filters the hex data to *.bin data(about bin formats, i refere to the flash data which is writen by flashburn), eventually, i write bin data to flash and it works!!!

0 rong gao over 13 years ago in reply to sriram garikipati

Intellectual 355 points

thank you very much, my english is not good. - -

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the problem of psp/uart sample