Hi,
We're using LPC54018 (208 PINs) customized board, we're trying to connect a TFT (ST7789v) through SPI interface. We're using FLEXCOMM9, configured peripheral clock as 96MHZ and updated the package to 208 PINs through MCUxpresso config tool. We're getting clock and data still the display doesn't shown the correct data/ didn't get refreshed?
Is XIP and non-xip project clock gets differed because the clock signal got differed in CRO analysis?
In code, boot init clock also got differed such as
In non-XIP project:
void BOARD_InitBootClocks(void)
{
BOARD_BootClockPLL180M();
}
In XIP project:
void BOARD_InitBootClocks(void)
{
BOARD_BootClockRUN();
}
Hereby i have attached the CRO SPI image images for your reference (Yellow colour clock signal got from non-XIP project and Blue colour clock signal got from XIP project).
Hi,
1) Hereby, I have attached the .mex file and screenshots of pin & clock configurations in the MUCXpresso config tool for your reference.
PIN configurations:
LPC54018 - Package selected as 208PIN:
System Clock configured as 96MHz:
Flexcomm 9 (SPI) peripheral clock configured as 96MHz:
2) About your two projects, the only difference is XIP and no-XIP? Yes.
In No-XIP, we configured system clock as 180MHz.
In XIP, whatever the system clock we're getting SPI clock and data but there is no trace for the communication with the TFT ST7789v driver.
3) I mean the "Digital Oscilloscope"
4) Hereby, I have attached the ZIP file - XIP project developed from helloworld_XIP SDK example project for your reference.
Hello,
So in the CRO, the signal is SCK (PIO3_20) of SPI 9?
FROM your code, the baudrate is 50000:
BR
Alice
Hello @Renuga_AKAS
1) How about click the Update Code button:
2) About clock configuration, you can config refer to your requirement. You can see the Hello world XIP and no-xip demo under SDK, they all use BOARD_BootClockFROHF96M().
BR
Alice
