Products > Test Equipment
New bench scope - Fnirsi 1014D, 7", 1GSa/s
pcprogrammer:
I'm looking at the hardware to see how it differs from the 1013D and noticed that they changed the FPGA clock setup. Instead of a 50MHz crystal oscillator it has a 25MHz crystal and a MS5351M clock synthesizer chip. The MS5351M is controlled via I2C which bit banged by the F1C100s. It uses pins 65 and 66 of the CPU.
They use two outputs of the synthesizer to clock the FPGA. Pins 23 and 24.
I might as well do a full reverse engineering of the schematic now I have it lying open on my desk :-DD
pcprogrammer:
Hi Yusef,
there is another test you can run to determine if the firmware passes a certain point. Remove the SD card and turn the scope on. It should give a black screen with red text "SD ERROR"
Cheers,
Peter
joseph4511:
Hey Peter
i tried to launch without SD card many times, never ever passed Fnirsi logo. Could not managed to pass that screen. I do not have bluepill board but i have arduino IDE and Arduino Mega and USB005 for special Infineon IR pwm controllers and gate drivers. I found TD Dynasty last night. Found the pinout of AL3-10 checked voltages and found nothing.
pcprogrammer:
Ok that narrows it down to the first bit of the code. Tomorrow I will look at it to see if I can find why this happens.
The problem with the JTAG of the FPGA is that there is no open source project that can be converted to an Arduino Mega, At least as far as I know. So this means another approach is needed.
joseph4511:
i ordered the stm32 dongle, it arrives 4 days later.
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