forked from espressif/arduino-esp32
Initial Commit
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@ -25,6 +25,10 @@
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#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
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#include "esp32/rom/ets_sys.h"
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#include "esp_intr_alloc.h"
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/ets_sys.h"
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#include "esp_intr_alloc.h"
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#include "soc/periph_defs.h"
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#else
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#error Target CONFIG_IDF_TARGET is not supported
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#endif
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@ -42,6 +46,7 @@ static intr_handle_t touch_intr_handle = NULL;
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void IRAM_ATTR __touchISR(void * arg)
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{
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#if CONFIG_IDF_TARGET_ESP32
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uint32_t pad_intr = READ_PERI_REG(SENS_SAR_TOUCH_CTRL2_REG) & 0x3ff;
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uint32_t rtc_intr = READ_PERI_REG(RTC_CNTL_INT_ST_REG);
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uint8_t i = 0;
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@ -58,16 +63,19 @@ void IRAM_ATTR __touchISR(void * arg)
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}
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}
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}
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#endif
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}
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void __touchSetCycles(uint16_t measure, uint16_t sleep)
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{
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__touchSleepCycles = sleep;
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__touchMeasureCycles = measure;
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#if CONFIG_IDF_TARGET_ESP32
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//Touch pad SleepCycle Time
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SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_SLEEP_CYCLES, __touchSleepCycles, SENS_TOUCH_SLEEP_CYCLES_S);
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//Touch Pad Measure Time
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SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_MEAS_DELAY, __touchMeasureCycles, SENS_TOUCH_MEAS_DELAY_S);
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#endif
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}
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void __touchInit()
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@ -77,15 +85,19 @@ void __touchInit()
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return;
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}
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initialized = true;
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#if CONFIG_IDF_TARGET_ESP32
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SET_PERI_REG_BITS(RTC_IO_TOUCH_CFG_REG, RTC_IO_TOUCH_XPD_BIAS, 1, RTC_IO_TOUCH_XPD_BIAS_S);
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SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_MEAS_EN_CLR);
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//clear touch enable
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WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG, 0x0);
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SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_TOUCH_SLP_TIMER_EN);
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#endif
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__touchSetCycles(__touchMeasureCycles, __touchSleepCycles);
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#if CONFIG_IDF_TARGET_ESP32
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esp_intr_alloc(ETS_RTC_CORE_INTR_SOURCE, (int)ESP_INTR_FLAG_IRAM, __touchISR, NULL, &touch_intr_handle);
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#endif
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}
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uint16_t __touchRead(uint8_t pin)
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@ -99,6 +111,7 @@ uint16_t __touchRead(uint8_t pin)
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__touchInit();
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#if CONFIG_IDF_TARGET_ESP32
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uint32_t v0 = READ_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG);
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//Disable Intr & enable touch pad
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WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG,
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@ -130,6 +143,9 @@ uint16_t __touchRead(uint8_t pin)
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//restore previous value
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WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG, v0);
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return touch_value;
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#else
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return 0;
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#endif
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}
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void __touchAttachInterrupt(uint8_t pin, void (*userFunc)(void), uint16_t threshold)
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@ -145,6 +161,7 @@ void __touchAttachInterrupt(uint8_t pin, void (*userFunc)(void), uint16_t thresh
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__touchInterruptHandlers[pad] = userFunc;
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#if CONFIG_IDF_TARGET_ESP32
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//clear touch force ,select the Touch mode is Timer
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CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M|SENS_TOUCH_START_FORCE_M);
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@ -172,6 +189,7 @@ void __touchAttachInterrupt(uint8_t pin, void (*userFunc)(void), uint16_t thresh
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(1 << (pad + SENS_TOUCH_PAD_WORKEN_S)) | \
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(1 << (pad + SENS_TOUCH_PAD_OUTEN2_S)) | \
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(1 << (pad + SENS_TOUCH_PAD_OUTEN1_S)));
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#endif
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}
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extern uint16_t touchRead(uint8_t pin) __attribute__ ((weak, alias("__touchRead")));
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