2af8cc3485
Fixes #5493 ## Summary PR #4996 has broken Touch Interrupt functionality by removing a single line of code used to set a Register. ## Impact This PR fixes issue #5493 by reverting the removal of necessary code as described above.
231 lines
8.3 KiB
C
231 lines
8.3 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "esp32-hal-touch.h"
|
|
#ifndef CONFIG_IDF_TARGET_ESP32C3
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "esp_attr.h"
|
|
#include "soc/rtc_io_reg.h"
|
|
#include "soc/sens_reg.h"
|
|
#include "soc/sens_struct.h"
|
|
#include "soc/rtc_cntl_reg.h"
|
|
#include "driver/touch_sensor.h"
|
|
|
|
#include "esp_system.h"
|
|
#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
|
|
#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
|
|
#include "esp32/rom/ets_sys.h"
|
|
#include "esp_intr_alloc.h"
|
|
#elif CONFIG_IDF_TARGET_ESP32S2
|
|
#include "esp32s2/rom/ets_sys.h"
|
|
#include "esp_intr_alloc.h"
|
|
#include "soc/periph_defs.h"
|
|
#else
|
|
#error Target CONFIG_IDF_TARGET is not supported
|
|
#endif
|
|
#else // ESP32 Before IDF 4.0
|
|
#include "rom/ets_sys.h"
|
|
#include "esp_intr.h"
|
|
#endif
|
|
|
|
static uint16_t __touchSleepCycles = 0x1000;
|
|
static uint16_t __touchMeasureCycles = 0x1000;
|
|
|
|
typedef void (*voidFuncPtr)(void);
|
|
static voidFuncPtr __touchInterruptHandlers[10] = {0,};
|
|
static intr_handle_t touch_intr_handle = NULL;
|
|
|
|
void ARDUINO_ISR_ATTR __touchISR(void * arg)
|
|
{
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
uint32_t pad_intr = READ_PERI_REG(SENS_SAR_TOUCH_CTRL2_REG) & 0x3ff;
|
|
uint32_t rtc_intr = READ_PERI_REG(RTC_CNTL_INT_ST_REG);
|
|
uint8_t i = 0;
|
|
//clear interrupt
|
|
WRITE_PERI_REG(RTC_CNTL_INT_CLR_REG, rtc_intr);
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_MEAS_EN_CLR);
|
|
|
|
if (rtc_intr & RTC_CNTL_TOUCH_INT_ST) {
|
|
for (i = 0; i < 10; ++i) {
|
|
if ((pad_intr >> i) & 0x01) {
|
|
if(__touchInterruptHandlers[i]){
|
|
__touchInterruptHandlers[i]();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void __touchSetCycles(uint16_t measure, uint16_t sleep)
|
|
{
|
|
__touchSleepCycles = sleep;
|
|
__touchMeasureCycles = measure;
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
//Touch pad SleepCycle Time
|
|
SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_SLEEP_CYCLES, __touchSleepCycles, SENS_TOUCH_SLEEP_CYCLES_S);
|
|
//Touch Pad Measure Time
|
|
SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_MEAS_DELAY, __touchMeasureCycles, SENS_TOUCH_MEAS_DELAY_S);
|
|
#else
|
|
touch_pad_set_meas_time(sleep, measure);
|
|
#endif
|
|
}
|
|
|
|
void __touchInit()
|
|
{
|
|
static bool initialized = false;
|
|
if(initialized){
|
|
return;
|
|
}
|
|
initialized = true;
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
SET_PERI_REG_BITS(RTC_IO_TOUCH_CFG_REG, RTC_IO_TOUCH_XPD_BIAS, 1, RTC_IO_TOUCH_XPD_BIAS_S);
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_MEAS_EN_CLR);
|
|
//clear touch enable
|
|
WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG, 0x0);
|
|
SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_TOUCH_SLP_TIMER_EN);
|
|
__touchSetCycles(__touchMeasureCycles, __touchSleepCycles);
|
|
esp_intr_alloc(ETS_RTC_CORE_INTR_SOURCE, (int)ARDUINO_ISR_FLAG, __touchISR, NULL, &touch_intr_handle);
|
|
#else
|
|
touch_pad_init();
|
|
touch_pad_set_voltage(TOUCH_HVOLT_2V7, TOUCH_LVOLT_0V5, TOUCH_HVOLT_ATTEN_0V5);
|
|
touch_pad_set_idle_channel_connect(TOUCH_PAD_CONN_GND);
|
|
__touchSetCycles(__touchMeasureCycles, __touchSleepCycles);
|
|
touch_pad_denoise_t denoise = {
|
|
.grade = TOUCH_PAD_DENOISE_BIT4,
|
|
.cap_level = TOUCH_PAD_DENOISE_CAP_L4,
|
|
};
|
|
touch_pad_denoise_set_config(&denoise);
|
|
touch_pad_denoise_enable();
|
|
touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
|
|
touch_pad_fsm_start();
|
|
#endif
|
|
}
|
|
|
|
uint16_t __touchRead(uint8_t pin)
|
|
{
|
|
int8_t pad = digitalPinToTouchChannel(pin);
|
|
if(pad < 0){
|
|
return 0;
|
|
}
|
|
|
|
pinMode(pin, ANALOG);
|
|
|
|
__touchInit();
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
uint32_t v0 = READ_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG);
|
|
//Disable Intr & enable touch pad
|
|
WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG,
|
|
(v0 & ~((1 << (pad + SENS_TOUCH_PAD_OUTEN2_S)) | (1 << (pad + SENS_TOUCH_PAD_OUTEN1_S))))
|
|
| (1 << (pad + SENS_TOUCH_PAD_WORKEN_S)));
|
|
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG, (1 << (pad + SENS_TOUCH_PAD_WORKEN_S)));
|
|
|
|
uint32_t rtc_tio_reg = RTC_IO_TOUCH_PAD0_REG + pad * 4;
|
|
WRITE_PERI_REG(rtc_tio_reg, (READ_PERI_REG(rtc_tio_reg)
|
|
& ~(RTC_IO_TOUCH_PAD0_DAC_M))
|
|
| (7 << RTC_IO_TOUCH_PAD0_DAC_S)//Touch Set Slope
|
|
| RTC_IO_TOUCH_PAD0_TIE_OPT_M //Enable Tie,Init Level
|
|
| RTC_IO_TOUCH_PAD0_START_M //Enable Touch Pad IO
|
|
| RTC_IO_TOUCH_PAD0_XPD_M); //Enable Touch Pad Power on
|
|
|
|
//force oneTime test start
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M|SENS_TOUCH_START_FORCE_M);
|
|
|
|
SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_XPD_WAIT, 10, SENS_TOUCH_XPD_WAIT_S);
|
|
|
|
while (GET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_MEAS_DONE) == 0) {};
|
|
|
|
uint16_t touch_value = READ_PERI_REG(SENS_SAR_TOUCH_OUT1_REG + (pad / 2) * 4) >> ((pad & 1) ? SENS_TOUCH_MEAS_OUT1_S : SENS_TOUCH_MEAS_OUT0_S);
|
|
|
|
//clear touch force ,select the Touch mode is Timer
|
|
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M|SENS_TOUCH_START_FORCE_M);
|
|
|
|
//restore previous value
|
|
WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG, v0);
|
|
return touch_value;
|
|
#else
|
|
static uint32_t chan_mask = 0;
|
|
uint32_t value = 0;
|
|
if((chan_mask & (1 << pad)) == 0){
|
|
if(touch_pad_set_thresh((touch_pad_t)pad, TOUCH_PAD_THRESHOLD_MAX) != ESP_OK){
|
|
log_e("touch_pad_set_thresh failed");
|
|
} else if(touch_pad_config((touch_pad_t)pad) != ESP_OK){
|
|
log_e("touch_pad_config failed");
|
|
} else {
|
|
chan_mask |= (1 << pad);
|
|
}
|
|
}
|
|
if((chan_mask & (1 << pad)) != 0) {
|
|
if(touch_pad_read_raw_data((touch_pad_t)pad, &value) != ESP_OK){
|
|
log_e("touch_pad_read_raw_data failed");
|
|
}
|
|
}
|
|
return value;
|
|
#endif
|
|
}
|
|
|
|
void __touchAttachInterrupt(uint8_t pin, void (*userFunc)(void), uint16_t threshold)
|
|
{
|
|
int8_t pad = digitalPinToTouchChannel(pin);
|
|
if(pad < 0){
|
|
return;
|
|
}
|
|
|
|
pinMode(pin, ANALOG);
|
|
|
|
__touchInit();
|
|
|
|
__touchInterruptHandlers[pad] = userFunc;
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
//clear touch force ,select the Touch mode is Timer
|
|
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M|SENS_TOUCH_START_FORCE_M);
|
|
|
|
//interrupt when touch value < threshold
|
|
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_OUT_SEL);
|
|
//Intr will give ,when SET0 < threshold
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_OUT_1EN);
|
|
//Enable Rtc Touch Module Intr,the Interrupt need Rtc out Enable
|
|
SET_PERI_REG_MASK(RTC_CNTL_INT_ENA_REG, RTC_CNTL_TOUCH_INT_ENA);
|
|
|
|
//set threshold
|
|
uint8_t shift = (pad & 1) ? SENS_TOUCH_OUT_TH1_S : SENS_TOUCH_OUT_TH0_S;
|
|
SET_PERI_REG_BITS((SENS_SAR_TOUCH_THRES1_REG + (pad / 2) * 4), SENS_TOUCH_OUT_TH0, threshold, shift);
|
|
|
|
uint32_t rtc_tio_reg = RTC_IO_TOUCH_PAD0_REG + pad * 4;
|
|
WRITE_PERI_REG(rtc_tio_reg, (READ_PERI_REG(rtc_tio_reg)
|
|
& ~(RTC_IO_TOUCH_PAD0_DAC_M))
|
|
| (7 << RTC_IO_TOUCH_PAD0_DAC_S)//Touch Set Slope
|
|
| RTC_IO_TOUCH_PAD0_TIE_OPT_M //Enable Tie,Init Level
|
|
| RTC_IO_TOUCH_PAD0_START_M //Enable Touch Pad IO
|
|
| RTC_IO_TOUCH_PAD0_XPD_M); //Enable Touch Pad Power on
|
|
|
|
//Enable Digital rtc control :work mode and out mode
|
|
SET_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG,
|
|
(1 << (pad + SENS_TOUCH_PAD_WORKEN_S)) | \
|
|
(1 << (pad + SENS_TOUCH_PAD_OUTEN2_S)) | \
|
|
(1 << (pad + SENS_TOUCH_PAD_OUTEN1_S)));
|
|
#else
|
|
|
|
#endif
|
|
}
|
|
|
|
extern uint16_t touchRead(uint8_t pin) __attribute__ ((weak, alias("__touchRead")));
|
|
extern void touchAttachInterrupt(uint8_t pin, void (*userFunc)(void), uint16_t threshold) __attribute__ ((weak, alias("__touchAttachInterrupt")));
|
|
extern void touchSetCycles(uint16_t measure, uint16_t sleep) __attribute__ ((weak, alias("__touchSetCycles")));
|
|
#endif
|