TheArchive/mayhem-firmware
1
0
Fork 0
mirror of https://github.com/portapack-mayhem/mayhem-firmware.git synced 2025-01-13 11:53:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

Touch code cleanup, stop scanning when no touch.

Browse Source 
No need to change voltages on touch panel when no touch is detected. This should reduce noise a bit.
This commit is contained in:
Jared Boone 2015-09-02 18:48:38 -07:00
parent f1ca3fe5bb
commit 9a3454d695
1 changed files with 29 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
firmware/application/irq_controls.cpp
View File

@ -79,20 +79,26 @@ static touch::Frame touch_frame;
static uint32_t touch_debounce = 0; static uint32_t touch_debounce = 0;
static uint32_t touch_debounce_mask = (1U << 1) - 1; static uint32_t touch_debounce_mask = (1U << 1) - 1;
static bool touch_stable = false; static bool touch_detected = false;
static bool touch_cycle = false;
static bool touch_update() { static bool touch_update() {
const auto samples = touch::adc::get(); const auto samples = touch::adc::get();
const auto current_phase = touch_pins_configs[touch_phase]; const auto current_phase = touch_pins_configs[touch_phase];
if( current_phase == portapack::IO::TouchPinsConfig::WaitTouch ) { switch(current_phase) {
case portapack::IO::TouchPinsConfig::WaitTouch:
{
/* Debounce touches. */ /* Debounce touches. */
const bool touch_raw = (samples.yp < touch::touch_threshold) && (samples.yn < touch::touch_threshold); const bool touch_raw = (samples.yp < touch::touch_threshold) && (samples.yn < touch::touch_threshold);
touch_debounce = (touch_debounce << 1) | (touch_raw ? 1U : 0U); touch_debounce = (touch_debounce << 1) | (touch_raw ? 1U : 0U);
touch_stable = ((touch_debounce & touch_debounce_mask) == touch_debounce_mask); touch_detected = ((touch_debounce & touch_debounce_mask) == touch_debounce_mask);
} else { if( !touch_detected && !touch_cycle ) {
if( touch_stable ) { return false;
switch(current_phase) { }
}
break;
case portapack::IO::TouchPinsConfig::SensePressure: case portapack::IO::TouchPinsConfig::SensePressure:
temp_frame.pressure += samples; temp_frame.pressure += samples;
break; break;
@ -108,14 +114,13 @@ static bool touch_update() {
default: default:
break; break;
} }
}
}
touch_phase++; touch_phase++;
if( touch_phase >= touch_pins_configs.size() ) { if( touch_phase >= touch_pins_configs.size() ) {
/* New iteration, calculate values and flag touch event */ /* New iteration, calculate values and flag touch event */
touch_phase = 0; touch_phase = 0;
temp_frame.touch = touch_stable; temp_frame.touch = touch_detected;
touch_cycle = touch_detected;
touch_frame = temp_frame; touch_frame = temp_frame;
temp_frame = {}; temp_frame = {};
return true; return true;