ChibiOS Free Embedded RTOS

Tectu,

End of a much better day, both lines of the 2x40 display working well - even have the custom characters working.

This is just what I need for now - if I get time over the weekend I will have a look at the 'read status/busy' command (I think that's what it is called) to avoid having to use ...

Hi tectu,

More luck today - I was trying to use the same port for data and control (GPIOD) but that didn't seem to work. Changing control to GPIOE I now get some output to the top line. At least I now have something to work on

A simple question has arisen on the way:

Using GCC and make I see ...

Hi Joel,

I did that - took the STM32f4 demo - no changes just amended the makefile for GFX, however I didn't get a sensible lcd output. It was a combination of garbled output and no response to the home or clear commands.

I changed the main.c around a bit to set up a pattern I could recognize and ...

Hi Tectu,

Sadly the honest answer to that is no.

I am struggling with the makefile, I used the demo project for my STM32f4 and I modified the makefile according to your instructions. I realise there is code being compiled for the demo which I don't need for my simple tdisp project but I am having ...

Giovanni - you are most welcome

Tectu - many thanks as ever...

Just curious and a sure fire way to demonstrate my ignorance but I was reading the HAL reference manual for the STM32F4 (bfl paid***)...

In the PAL section I find reference to 'Ports' as you would expect and 'Pads' which is not a description I have seen before - is this the same as the pins on a ...

Hi tectu,

Almost there but there is small difference between the declaration and defintion of tdispCreateChar() :

from tdisp.h:

void tdispCreateChar(uint8_t address, char* charmap);

and from tdisp.c:

void tdispCreateChar(uint8_t address, uint8_t *charmap) {
/* make sure we don't write ...

Tectu,

As you say it compiled fine - just getting used to OpenOCD at the moment, I will keep going with the tdisp since I already have the displays

btw the base board I am using http://www.wvshare.com/column/STM32_DevelopmentBoard.htm#Open407V-D has an LCD display that uses SSD1289 ...

Tectu,

I would be happy to do that once I get there, I have changed the identifiers now I have problems with these two:

tdispDrawStringLocation() - implicit declaration
tdispCreateChar() - argument 2 pointer has differing signedness

both are called in main.c as follows:

#include "ch.h ...

Hi,

I get compile warnings for undeclared identifiers "DISPLAY_ON" "CURSOR_ON" and "CURSOR_BLINK" in tdisp_lld.c

This is the relevant code block:

void tdisp_lld_control(uint16_t what, uint16_t value) {

switch(what) {
case TDISP_CTRL_BACKLIGHT:
if ((uint8_t)value)
displaycontrol ...