Hi everyone,
I'm now trying to add LCD driver for STM32F429, but get a linked error that
I can't resolve.
The apps/lcdtest/src/main.c include the lcd driver header, and then used
the defined function "hal_lcd_init":
#include "stm32f429_lcd/stm32f429_lcd.h"
int main() {
sysinit();
hal_lcd_init();
...
}
But when try to build and at the linking stage, it got the error message:
Linking bin/targets/lcdtest/app/apps/lcdtest/lcdtest.elf
Error:
bin/targets/lcdtest/app/hw/drivers/lcd/stm32f429_lcd/hw_drivers_lcd_stm32f429_lcd.a(stm32f429_lcd.o):
In function `hal_lcd_init':
repos/apache-mynewt-core/hw/drivers/lcd/stm32f429_lcd/src/stm32f429_lcd.c:56:
undefined reference to `HAL_LTDC_Init'
repos/apache-mynewt-core/hw/drivers/lcd/stm32f429_lcd/src/stm32f429_lcd.c:73:
undefined reference to `HAL_LTDC_ConfigLayer'
collect2: error: ld returned 1 exit status
I have already checked the include in gcc by `newt build lcdtest -v
-ldebug`, and the path of the file is included.
Why will the linker still throw a error and tell me there isn't
HAL_LTDC_init, and why will nm result tells the HAL_LTDC_Init and
ConfigLayer is "U", not found?
The git of the lcd code is here:
https://github.com/grapherd/incubator-mynewt-core/tree/stm32f429_lcd_test
code is inside:
- apps/lcdtest
- hw/drivers/lcd/stm32f429_lcd
Thanks,
Louie.
