Problem with 0.96" TFT display ST7735
Posted: Mon Jan 13, 2025 6:19 am
I recently received some 0.96" ST7735S TFT displays and decided to test them.
In the picture of the display you can see that the available communication pins are SCL-SDA-RES-DC-CS-BLK, but in FlowCode the available pins are MOSI-MISO-CLK-RES-DC-CS-BLK. So, I connected them as follows:
CLK ------ SCL
MOSI ---- SDA
MISO ---- Disconnected
RES ------ RES
DC -------- DC
CS -------- CS
BLK ------ BLK
I created a basic test flowchart, but it didn't work.
I tested several connection methods and several MCUs, but nothing worked.
So, I decided to select the ST7789 in the flowcode and see what happened.
To my surprise, the display worked.
I'm posting the picture of the display model, a real picture in operation and the flowchart. I would like someone to help me understand what is happening.
In the picture of the display you can see that the available communication pins are SCL-SDA-RES-DC-CS-BLK, but in FlowCode the available pins are MOSI-MISO-CLK-RES-DC-CS-BLK. So, I connected them as follows:
CLK ------ SCL
MOSI ---- SDA
MISO ---- Disconnected
RES ------ RES
DC -------- DC
CS -------- CS
BLK ------ BLK
I created a basic test flowchart, but it didn't work.
I tested several connection methods and several MCUs, but nothing worked.
So, I decided to select the ST7789 in the flowcode and see what happened.
To my surprise, the display worked.
I'm posting the picture of the display model, a real picture in operation and the flowchart. I would like someone to help me understand what is happening.