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Topics - Felix

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Character LCDs / NHD-C0216CZ-FSW-FBW-3V3 problems
« on: February 23, 2016, 09:28:05 AM »
We access a NHD-C0216CZ-FSW-FBW-3V3 over SPI from a FPGA. Because the display does not work I am not sure if I understand the SPI communication correct:

I do it according to the ST7032 datasheet (page 33, 34, 37, 45). And I tried also the commands freom the LCD data sheet page 10.

If I send only one command I have to send only 8 bits? What could be wrong?

Attached is a screenshot of a SPI access (0x0F : Display, cursor and cursor position on)

LCD_DNI ist the RS signal

Felix

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Character LCDs / R/W signal NHD-C0216CZ-FSW-FBW-3V3
« on: August 28, 2015, 04:07:35 AM »
In the data sheet of the NHD-C0216CZ-FSW-FBW-3V3 (NHD-C0216CZ-FSW-FBW-3V3) there is a column R/W. The signal is used for commands "Read Busy flage and address" and "Read data from RAM".

This pin is on the ST7030 controller. But it is not on the 10-pin interface of NHD-C0216CZ-FSW-FBW-3V3.

Does this mean reading from the display is not possible?

Felix

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