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Lee Lup Yuen 2023-01-03 21:14:16 +08:00
parent f22163a5dc
commit d310305e6d
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7
README.md
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@ -5050,7 +5050,7 @@ To detect Touch Events, we'll need to handle the Interrupts triggered by Touch P
Based on our research, PinePhone's Touch Panel Interrupt (CTP-INT) is connected at PH4.
Right now we poll PH4 (instead of handling interrupts) because it's easier: [pinephone_bringup.c](https://github.com/lupyuen2/wip-pinephone-nuttx/blob/c4991b1503387d57821d94a549425bcd8f268841/boards/arm64/a64/pinephone/src/pinephone_bringup.c#L256-L296)
Right now we poll PH4 (instead of handling interrupts) because it's easier: [pinephone_bringup.c](https://github.com/lupyuen2/wip-pinephone-nuttx/blob/e249049370d21a988912f2fb95a21514863dfe8a/boards/arm64/a64/pinephone/src/pinephone_bringup.c#L283-L317)
```c
// Test Touch Panel Interrupt by Polling as GPIO Input.
@ -5070,7 +5070,8 @@ void touch_panel_initialize(struct i2c_master_s *i2c)
// Poll the Touch Panel Interrupt as GPIO Input
bool prev_val = false;
for (int i = 0; i < 500; i++) { // Poll for 5 seconds
for (int i = 0; i < 6000; i++) { // Poll for 60 seconds
// Read the GPIO Input
bool val = a64_pio_read(CTP_INT);
@ -5082,7 +5083,7 @@ void touch_panel_initialize(struct i2c_master_s *i2c)
else { up_putc('-'); }
prev_val = val;
// If value is High...
// If we have just transitioned from Low to High...
if (val) {
// Read the Touch Panel over I2C