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+ Fixup: Refactor quadrature decoder initialization a bit

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This commit is contained in:
Dominic Höglinger 2025-07-20 22:31:35 +02:00
parent f7cfa9a431
commit 6aee531685
1 changed files with 41 additions and 22 deletions
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63
Boards/LilygoTLoraPager/Source/hal/TpagerKeyboard.cpp
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@ -219,10 +219,6 @@ void TpagerKeyboard::initEncoder(void) {
const int low_limit = -127;
const int high_limit = 126;
// Original implementation based on
// https://github.com/UsefulElectronics/esp32s3-gc9a01-lvgl/blob/main/main/hardware/rotary_encoder.c
// Copyright (c) 2023 Ward Almasarani
// Accum. count makes it that over- and underflows are automatically compensated.
// Prerequisite: watchpoints at low and high limit
pcnt_unit_config_t unit_config = {
@ -231,37 +227,60 @@ void TpagerKeyboard::initEncoder(void) {
.flags = {.accum_count = 1},
};
ESP_ERROR_CHECK(pcnt_new_unit(&unit_config, &encPcntUnit));
if (pcnt_new_unit(&unit_config, &encPcntUnit) != ESP_OK) {
TT_LOG_E(TAG, "Pulsecounter intialization failed");
}
pcnt_glitch_filter_config_t filter_config = {
.max_glitch_ns = 1000,
.max_glitch_ns = 5000,
};
ESP_ERROR_CHECK(pcnt_unit_set_glitch_filter(encPcntUnit, &filter_config));
if (pcnt_unit_set_glitch_filter(encPcntUnit, &filter_config) != ESP_OK) {
TT_LOG_E(TAG, "Pulsecounter glitch filter config failed");
}
pcnt_chan_config_t chan_a_config = {
pcnt_chan_config_t chan_1_config = {
.edge_gpio_num = ENCODER_A,
.level_gpio_num = ENCODER_B,
};
pcnt_channel_handle_t pcnt_chan_a = NULL;
ESP_ERROR_CHECK(pcnt_new_channel(encPcntUnit, &chan_a_config, &pcnt_chan_a));
pcnt_chan_config_t chan_b_config = {
pcnt_chan_config_t chan_2_config = {
.edge_gpio_num = ENCODER_B,
.level_gpio_num = ENCODER_A,
};
pcnt_channel_handle_t pcnt_chan_b = NULL;
ESP_ERROR_CHECK(pcnt_new_channel(encPcntUnit, &chan_b_config, &pcnt_chan_b));
ESP_ERROR_CHECK(pcnt_channel_set_edge_action(pcnt_chan_a, PCNT_CHANNEL_EDGE_ACTION_DECREASE, PCNT_CHANNEL_EDGE_ACTION_INCREASE));
ESP_ERROR_CHECK(pcnt_channel_set_level_action(pcnt_chan_a, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE));
ESP_ERROR_CHECK(pcnt_channel_set_edge_action(pcnt_chan_b, PCNT_CHANNEL_EDGE_ACTION_INCREASE, PCNT_CHANNEL_EDGE_ACTION_DECREASE));
ESP_ERROR_CHECK(pcnt_channel_set_level_action(pcnt_chan_b, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE));
pcnt_channel_handle_t pcnt_chan_1 = NULL;
pcnt_channel_handle_t pcnt_chan_2 = NULL;
ESP_ERROR_CHECK(pcnt_unit_add_watch_point(encPcntUnit, low_limit));
ESP_ERROR_CHECK(pcnt_unit_add_watch_point(encPcntUnit, high_limit));
if ((pcnt_new_channel(encPcntUnit, &chan_1_config, &pcnt_chan_1) != ESP_OK) ||
(pcnt_new_channel(encPcntUnit, &chan_2_config, &pcnt_chan_2) != ESP_OK)) {
TT_LOG_E(TAG, "Pulsecounter channel config failed");
}
ESP_ERROR_CHECK(pcnt_unit_enable(encPcntUnit));
ESP_ERROR_CHECK(pcnt_unit_clear_count(encPcntUnit));
ESP_ERROR_CHECK(pcnt_unit_start(encPcntUnit));
// second argument is rising edge, third argument is falling edge
if ((pcnt_channel_set_edge_action(pcnt_chan_1, PCNT_CHANNEL_EDGE_ACTION_DECREASE, PCNT_CHANNEL_EDGE_ACTION_INCREASE) != ESP_OK) ||
(pcnt_channel_set_edge_action(pcnt_chan_2, PCNT_CHANNEL_EDGE_ACTION_INCREASE, PCNT_CHANNEL_EDGE_ACTION_DECREASE) != ESP_OK)) {
TT_LOG_E(TAG, "Pulsecounter edge action config failed");
}
// second argument is low level, third argument is high level
if ((pcnt_channel_set_level_action(pcnt_chan_1, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE) != ESP_OK) ||
(pcnt_channel_set_level_action(pcnt_chan_2, PCNT_CHANNEL_LEVEL_ACTION_KEEP, PCNT_CHANNEL_LEVEL_ACTION_INVERSE) != ESP_OK)) {
TT_LOG_E(TAG, "Pulsecounter level action config failed");
}
if ((pcnt_unit_add_watch_point(encPcntUnit, low_limit) != ESP_OK) ||
(pcnt_unit_add_watch_point(encPcntUnit, high_limit) != ESP_OK)) {
TT_LOG_E(TAG, "Pulsecounter watch point config failed");
}
if (pcnt_unit_enable(encPcntUnit) != ESP_OK) {
TT_LOG_E(TAG, "Pulsecounter could not be enabled");
}
if (pcnt_unit_clear_count(encPcntUnit) != ESP_OK) {
TT_LOG_E(TAG, "Pulsecounter could not be cleared");
}
if (pcnt_unit_start(encPcntUnit) != ESP_OK) {
TT_LOG_E(TAG, "Pulsecounter could not be started");
}
}
int TpagerKeyboard::getEncoderPulses() {