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esp-idf/components/driver/rtc_module.c
Chu Shu Chen b1db2721dc driver: add rtc module and bugfix gpio32 gpio33 
feature(rtc_module):add rtc module

1. add rtc io control API (pull,output and input)
2. add touch pad API (touch pad read and interrupt)
3. add adc1 API (the max width is 12 Bits and support attenuation)
4. add hall sensor API (support hall sensor read )
5. add dac API (the width is 8 Bits)

bugfix(gpio):gpio32 and gpio33 can not output and input

the gpio32 and gpio33 is initialize by librtc.a,and gpio_config not initialize the gpio as
digital gpio.they can not output and input,when users use gpio32 or gpio33.And there are some problems
about others driver ,when they use gpio32 or gpio33 as  matrix.
2016-12-07 15:56:13 +08:00

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// 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 <esp_types.h>
#include <stdlib.h>
#include <ctype.h>
#include "rom/ets_sys.h"
#include "esp_log.h"
#include "soc/rtc_io_reg.h"
#include "soc/sens_reg.h"
#include "soc/rtc_cntl_reg.h"
#include "rtc_io.h"
#include "touch_pad.h"
#include "adc.h"
#include "dac.h"
#include "freertos/FreeRTOS.h"
#include "freertos/xtensa_api.h"
static const char *RTC_MODULE_TAG = "RTC_MODULE";
#define RTC_MODULE_CHECK(a, str, ret_val) if (!(a)) { \
ESP_LOGE(RTC_MODULE_TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret_val); \
}
#define ADC1_CHECK_FUNCTION_RET(fun_ret) if(fun_ret!=ESP_OK){\
ESP_LOGE(RTC_MODULE_TAG,"%s:%d\n",__FUNCTION__,__LINE__);\
return ESP_FAIL;\
}
portMUX_TYPE rtc_spinlock = portMUX_INITIALIZER_UNLOCKED;
//Reg,Mux,Fun,IE,Up,Down,Rtc_number
const rtc_gpio_desc_t rtc_gpio_desc[GPIO_PIN_COUNT] = {
{RTC_IO_TOUCH_PAD1_REG, RTC_IO_TOUCH_PAD1_MUX_SEL_M, RTC_IO_TOUCH_PAD1_FUN_SEL_S, RTC_IO_TOUCH_PAD1_FUN_IE_M, RTC_IO_TOUCH_PAD1_RUE_M, RTC_IO_TOUCH_PAD1_RDE_M, 11}, //0
{0, 0, 0, 0, 0, 0, -1}, //1
{RTC_IO_TOUCH_PAD2_REG, RTC_IO_TOUCH_PAD2_MUX_SEL_M, RTC_IO_TOUCH_PAD2_FUN_SEL_S, RTC_IO_TOUCH_PAD2_FUN_IE_M, RTC_IO_TOUCH_PAD2_RUE_M, RTC_IO_TOUCH_PAD2_RDE_M, 12}, //2
{0, 0, 0, 0, 0, 0, -1}, //3
{RTC_IO_TOUCH_PAD0_REG, RTC_IO_TOUCH_PAD0_MUX_SEL_M, RTC_IO_TOUCH_PAD0_FUN_SEL_S, RTC_IO_TOUCH_PAD0_FUN_IE_M, RTC_IO_TOUCH_PAD0_RUE_M, RTC_IO_TOUCH_PAD0_RDE_M, 10}, //4
{0, 0, 0, 0, 0, 0, -1}, //5
{0, 0, 0, 0, 0, 0, -1}, //6
{0, 0, 0, 0, 0, 0, -1}, //7
{0, 0, 0, 0, 0, 0, -1}, //8
{0, 0, 0, 0, 0, 0, -1}, //9
{0, 0, 0, 0, 0, 0, -1}, //10
{0, 0, 0, 0, 0, 0, -1}, //11
{RTC_IO_TOUCH_PAD5_REG, RTC_IO_TOUCH_PAD5_MUX_SEL_M, RTC_IO_TOUCH_PAD5_FUN_SEL_S, RTC_IO_TOUCH_PAD5_FUN_IE_M, RTC_IO_TOUCH_PAD5_RUE_M, RTC_IO_TOUCH_PAD5_RDE_M, 15}, //12
{RTC_IO_TOUCH_PAD4_REG, RTC_IO_TOUCH_PAD4_MUX_SEL_M, RTC_IO_TOUCH_PAD4_FUN_SEL_S, RTC_IO_TOUCH_PAD4_FUN_IE_M, RTC_IO_TOUCH_PAD4_RUE_M, RTC_IO_TOUCH_PAD4_RDE_M, 14}, //13
{RTC_IO_TOUCH_PAD6_REG, RTC_IO_TOUCH_PAD6_MUX_SEL_M, RTC_IO_TOUCH_PAD6_FUN_SEL_S, RTC_IO_TOUCH_PAD6_FUN_IE_M, RTC_IO_TOUCH_PAD6_RUE_M, RTC_IO_TOUCH_PAD6_RDE_M, 16}, //14
{RTC_IO_TOUCH_PAD3_REG, RTC_IO_TOUCH_PAD3_MUX_SEL_M, RTC_IO_TOUCH_PAD3_FUN_SEL_S, RTC_IO_TOUCH_PAD3_FUN_IE_M, RTC_IO_TOUCH_PAD3_RUE_M, RTC_IO_TOUCH_PAD3_RDE_M, 13}, //15
{0, 0, 0, 0, 0, 0, -1}, //16
{0, 0, 0, 0, 0, 0, -1}, //17
{0, 0, 0, 0, 0, 0, -1}, //18
{0, 0, 0, 0, 0, 0, -1}, //19
{0, 0, 0, 0, 0, 0, -1}, //20
{0, 0, 0, 0, 0, 0, -1}, //21
{0, 0, 0, 0, 0, 0, -1}, //22
{0, 0, 0, 0, 0, 0, -1}, //23
{0, 0, 0, 0, 0, 0, -1}, //24
{RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_MUX_SEL_M, RTC_IO_PDAC1_FUN_SEL_S, RTC_IO_PDAC1_FUN_IE_M, RTC_IO_PDAC1_RUE_M, RTC_IO_PDAC1_RDE_M, 6}, //25
{RTC_IO_PAD_DAC2_REG, RTC_IO_PDAC2_MUX_SEL_M, RTC_IO_PDAC2_FUN_SEL_S, RTC_IO_PDAC2_FUN_IE_M, RTC_IO_PDAC2_RUE_M, RTC_IO_PDAC2_RDE_M, 7}, //26
{RTC_IO_TOUCH_PAD7_REG, RTC_IO_TOUCH_PAD7_MUX_SEL_M, RTC_IO_TOUCH_PAD7_FUN_SEL_S, RTC_IO_TOUCH_PAD7_FUN_IE_M, RTC_IO_TOUCH_PAD7_RUE_M, RTC_IO_TOUCH_PAD7_RDE_M, 17}, //27
{0, 0, 0, 0, 0, 0, -1}, //28
{0, 0, 0, 0, 0, 0, -1}, //29
{0, 0, 0, 0, 0, 0, -1}, //30
{0, 0, 0, 0, 0, 0, -1}, //31
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32P_MUX_SEL_M, RTC_IO_X32P_FUN_SEL_S, RTC_IO_X32P_FUN_IE_M, RTC_IO_X32P_RUE_M, RTC_IO_X32P_RDE_M, 9}, //32
{RTC_IO_XTAL_32K_PAD_REG, RTC_IO_X32N_MUX_SEL_M, RTC_IO_X32N_FUN_SEL_S, RTC_IO_X32N_FUN_IE_M, RTC_IO_X32N_RUE_M, RTC_IO_X32N_RDE_M, 8}, //33
{RTC_IO_ADC_PAD_REG, RTC_IO_ADC1_MUX_SEL_M, RTC_IO_ADC1_FUN_SEL_S, RTC_IO_ADC1_FUN_IE_M, 0, 0, 4}, //34
{RTC_IO_ADC_PAD_REG, RTC_IO_ADC2_MUX_SEL_M, RTC_IO_ADC2_FUN_SEL_S, RTC_IO_ADC2_FUN_IE_M, 0, 0, 5}, //35
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE1_MUX_SEL_M, RTC_IO_SENSE1_FUN_SEL_S, RTC_IO_SENSE1_FUN_IE_M, 0, 0, 0}, //36
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE2_MUX_SEL_M, RTC_IO_SENSE2_FUN_SEL_S, RTC_IO_SENSE2_FUN_IE_M, 0, 0, 1}, //37
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE3_MUX_SEL_M, RTC_IO_SENSE3_FUN_SEL_S, RTC_IO_SENSE3_FUN_IE_M, 0, 0, 2}, //38
{RTC_IO_SENSOR_PADS_REG, RTC_IO_SENSE4_MUX_SEL_M, RTC_IO_SENSE4_FUN_SEL_S, RTC_IO_SENSE4_FUN_IE_M, 0, 0, 3}, //39
};
/*---------------------------------------------------------------
RTC IO
---------------------------------------------------------------*/
esp_err_t rtc_gpio_init(gpio_num_t gpio_num)
{
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
// 0: GPIO connected to digital GPIO module. 1: GPIO connected to analog RTC module.
SET_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, (rtc_gpio_desc[gpio_num].mux));
//0:RTC FUNCIOTN 1,2,3:Reserved
SET_PERI_REG_BITS(rtc_gpio_desc[gpio_num].reg, RTC_IO_TOUCH_PAD1_FUN_SEL_V, 0x0, rtc_gpio_desc[gpio_num].func);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t rtc_gpio_deinit(gpio_num_t gpio_num)
{
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//Select Gpio as Digital Gpio
CLEAR_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, (rtc_gpio_desc[gpio_num].mux));
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
static esp_err_t rtc_gpio_output_enable(gpio_num_t gpio_num)
{
int rtc_gpio_num = rtc_gpio_desc[gpio_num].rtc_num;
RTC_MODULE_CHECK(rtc_gpio_num != -1, "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
SET_PERI_REG_MASK(RTC_GPIO_ENABLE_W1TS_REG, (1 << (rtc_gpio_num + RTC_GPIO_ENABLE_W1TS_S)));
CLEAR_PERI_REG_MASK(RTC_GPIO_ENABLE_W1TC_REG, (1 << (rtc_gpio_num + RTC_GPIO_ENABLE_W1TC_S)));
return ESP_OK;
}
static esp_err_t rtc_gpio_output_disable(gpio_num_t gpio_num)
{
int rtc_gpio_num = rtc_gpio_desc[gpio_num].rtc_num;
RTC_MODULE_CHECK(rtc_gpio_num != -1, "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
CLEAR_PERI_REG_MASK(RTC_GPIO_ENABLE_W1TS_REG, (1 << (rtc_gpio_num + RTC_GPIO_ENABLE_W1TS_S)));
SET_PERI_REG_MASK(RTC_GPIO_ENABLE_W1TC_REG, (1 << ( rtc_gpio_num + RTC_GPIO_ENABLE_W1TC_S)));
return ESP_OK;
}
static esp_err_t rtc_gpio_input_enable(gpio_num_t gpio_num)
{
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].ie);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
static esp_err_t rtc_gpio_input_disable(gpio_num_t gpio_num)
{
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
CLEAR_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].ie);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t rtc_gpio_set_level(gpio_num_t gpio_num, uint32_t level)
{
int rtc_gpio_num = rtc_gpio_num = rtc_gpio_desc[gpio_num].rtc_num;;
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
if (level) {
WRITE_PERI_REG(RTC_GPIO_OUT_W1TS_REG, (1 << (rtc_gpio_num + RTC_GPIO_OUT_DATA_W1TS_S)));
} else {
WRITE_PERI_REG(RTC_GPIO_OUT_W1TC_REG, (1 << (rtc_gpio_num + RTC_GPIO_OUT_DATA_W1TC_S)));
}
return ESP_OK;
}
uint32_t rtc_gpio_get_level(gpio_num_t gpio_num)
{
uint32_t level = 0;
int rtc_gpio_num = rtc_gpio_desc[gpio_num].rtc_num;
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
level = READ_PERI_REG(RTC_GPIO_IN_REG);
portEXIT_CRITICAL(&rtc_spinlock);
return ((level >> (RTC_GPIO_IN_NEXT_S + rtc_gpio_num)) & 0x01);
}
esp_err_t rtc_gpio_set_direction(gpio_num_t gpio_num, rtc_gpio_mode_t mode)
{
RTC_MODULE_CHECK(RTC_GPIO_IS_VALID_GPIO(gpio_num), "RTC_GPIO number error", ESP_ERR_INVALID_ARG);
switch (mode) {
case RTC_GPIO_MODE_INPUT_ONLY:
rtc_gpio_output_disable(gpio_num);
rtc_gpio_input_enable(gpio_num);
break;
case RTC_GPIO_MODE_OUTPUT_ONLY:
rtc_gpio_output_enable(gpio_num);
rtc_gpio_input_disable(gpio_num);
break;
case RTC_GPIO_MODE_INPUT_OUTUT:
rtc_gpio_output_enable(gpio_num);
rtc_gpio_input_enable(gpio_num);
break;
case RTC_GPIO_MODE_DISABLED:
rtc_gpio_output_disable(gpio_num);
rtc_gpio_input_disable(gpio_num);
break;
}
return ESP_OK;
}
esp_err_t rtc_gpio_pullup_en(gpio_num_t gpio_num)
{
//this is a digital pad
if (rtc_gpio_desc[gpio_num].pullup == 0) {
return ESP_FAIL;
}
//this is a rtc pad
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].pullup);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t rtc_gpio_pulldown_en(gpio_num_t gpio_num)
{
//this is a digital pad
if (rtc_gpio_desc[gpio_num].pulldown == 0) {
return ESP_FAIL;
}
//this is a rtc pad
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].pulldown);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t rtc_gpio_pullup_dis(gpio_num_t gpio_num)
{
//this is a digital pad
if ( rtc_gpio_desc[gpio_num].pullup == 0 ) {
return ESP_FAIL;
}
//this is a rtc pad
portENTER_CRITICAL(&rtc_spinlock);
CLEAR_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].pullup);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t rtc_gpio_pulldown_dis(gpio_num_t gpio_num)
{
//this is a digital pad
if (rtc_gpio_desc[gpio_num].pulldown == 0) {
return ESP_FAIL;
}
//this is a rtc pad
portENTER_CRITICAL(&rtc_spinlock);
CLEAR_PERI_REG_MASK(rtc_gpio_desc[gpio_num].reg, rtc_gpio_desc[gpio_num].pulldown);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
/*---------------------------------------------------------------
Touch Pad
---------------------------------------------------------------*/
esp_err_t touch_pad_isr_handler_register(uint32_t touch_intr_num, void(*fn)(void *), void *arg)
{
RTC_MODULE_CHECK(fn, "Touch_Pad ISR null", ESP_ERR_INVALID_ARG);
ESP_INTR_DISABLE(touch_intr_num);
intr_matrix_set(xPortGetCoreID(), ETS_RTC_CORE_INTR_SOURCE, touch_intr_num);
xt_set_interrupt_handler(touch_intr_num, fn, arg);
ESP_INTR_ENABLE(touch_intr_num);
return ESP_OK;
}
static esp_err_t touch_pad_get_io_num(touch_pad_t touch_num, gpio_num_t *gpio_num)
{
switch (touch_num) {
case TOUCH_PAD_NUM0:
*gpio_num = 4;
break;
case TOUCH_PAD_NUM1:
*gpio_num = 0;
break;
case TOUCH_PAD_NUM2:
*gpio_num = 2;
break;
case TOUCH_PAD_NUM3:
*gpio_num = 15;
break;
case TOUCH_PAD_NUM4:
*gpio_num = 13;
break;
case TOUCH_PAD_NUM5:
*gpio_num = 12;
break;
case TOUCH_PAD_NUM6:
*gpio_num = 14;
break;
case TOUCH_PAD_NUM7:
*gpio_num = 27;
break;
case TOUCH_PAD_NUM8:
*gpio_num = 33;
break;
case TOUCH_PAD_NUM9:
*gpio_num = 32;
break;
default:
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
static esp_err_t touch_pad_init_config(uint16_t sleep_cycle, uint16_t sample_cycle_num)
{
portENTER_CRITICAL(&rtc_spinlock);
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);
//enable Rtc Touch pad Timer
SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_TOUCH_SLP_TIMER_EN);
//config pad module sleep time and sample num
//Touch pad SleepCycle Time = 150Khz
SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_SLEEP_CYCLES, sleep_cycle, SENS_TOUCH_SLEEP_CYCLES_S);//150kHZ
//Touch Pad Measure Time= 8Mhz
SET_PERI_REG_BITS(SENS_SAR_TOUCH_CTRL1_REG, SENS_TOUCH_MEAS_DELAY, sample_cycle_num, SENS_TOUCH_MEAS_DELAY_S); //8Mhz
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
void touch_pad_init()
{
touch_pad_init_config(TOUCH_PAD_SLEEP_CYCLE_CONFIG, TOUCH_PAD_MEASURE_CYCLE_CONFIG);
}
static void touch_pad_counter_init(touch_pad_t touch_num)
{
portENTER_CRITICAL(&rtc_spinlock);
//Enable Tie,Init Level(Counter)
SET_PERI_REG_MASK(RTC_IO_TOUCH_PAD0_REG + touch_num * 4, RTC_IO_TOUCH_PAD0_TIE_OPT_M);
//Touch Set Slop(Counter)
SET_PERI_REG_BITS(RTC_IO_TOUCH_PAD0_REG + touch_num * 4, RTC_IO_TOUCH_PAD0_DAC_V, 7, RTC_IO_TOUCH_PAD0_DAC_S);
//Enable Touch Pad IO
SET_PERI_REG_MASK(RTC_IO_TOUCH_PAD0_REG + touch_num * 4, RTC_IO_TOUCH_PAD0_START_M);
portEXIT_CRITICAL(&rtc_spinlock);
}
static void touch_pad_power_on(touch_pad_t touch_num)
{
portENTER_CRITICAL(&rtc_spinlock);
//Enable Touch Pad Power on
SET_PERI_REG_MASK(RTC_IO_TOUCH_PAD0_REG + touch_num * 4, RTC_IO_TOUCH_PAD0_XPD_M);
portEXIT_CRITICAL(&rtc_spinlock);
}
static void toch_pad_io_init(touch_pad_t touch_num)
{
gpio_num_t gpio_num = GPIO_NUM_0;
touch_pad_get_io_num(touch_num, &gpio_num);
rtc_gpio_init(gpio_num);
rtc_gpio_set_direction(gpio_num, RTC_GPIO_MODE_DISABLED);
rtc_gpio_pulldown_dis(gpio_num);
rtc_gpio_pullup_dis(gpio_num);
}
static esp_err_t touch_start(touch_pad_t touch_num)
{
RTC_MODULE_CHECK(touch_num < TOUCH_PAD_MAX, "Touch_Pad Num Err", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//Enable Digital rtc control :work mode and out mode
SET_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG, (1 << (touch_num + SENS_TOUCH_PAD_WORKEN_S)) | \
(1 << (touch_num + SENS_TOUCH_PAD_OUTEN2_S)) | \
(1 << (touch_num + SENS_TOUCH_PAD_OUTEN1_S)));
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
static esp_err_t touch_stop(touch_pad_t touch_num)
{
RTC_MODULE_CHECK(touch_num < TOUCH_PAD_MAX, "Touch_Pad Num Err", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//Disable Digital rtc control :work mode and out mode
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG, (1 << (touch_num + SENS_TOUCH_PAD_WORKEN_S)) | \
(1 << (touch_num + SENS_TOUCH_PAD_OUTEN2_S)) | \
(1 << (touch_num + SENS_TOUCH_PAD_OUTEN1_S)));
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t touch_pad_config(touch_pad_t touch_num, uint16_t threshold)
{
RTC_MODULE_CHECK(touch_num < TOUCH_PAD_MAX, "Touch_Pad Num Err", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//clear touch force ,select the Touch mode is Timer
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_FORCE_M);
//set threshold
uint8_t shift;
shift = (touch_num & 1) ? SENS_TOUCH_OUT_TH1_S : SENS_TOUCH_OUT_TH0_S;
SET_PERI_REG_BITS((SENS_SAR_TOUCH_THRES1_REG + (touch_num / 2) * 4), SENS_TOUCH_OUT_TH0, threshold, shift);
//When touch value < threshold ,the Intr will give
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);
portEXIT_CRITICAL(&rtc_spinlock);
touch_pad_power_on(touch_num);
toch_pad_io_init(touch_num);
touch_pad_counter_init(touch_num);
touch_start(touch_num);
return ESP_OK;
}
esp_err_t touch_pad_read(touch_pad_t touch_num, uint16_t *touch_value)
{
RTC_MODULE_CHECK(touch_num < TOUCH_PAD_MAX, "Touch_Pad Num Err", ESP_ERR_INVALID_ARG);
RTC_MODULE_CHECK(touch_value!=NULL, "touch_value", ESP_ERR_INVALID_ARG);
uint32_t v0 = READ_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG);
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG, (1 << (touch_num)));
//Disable Intr
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_ENABLE_REG, (1 << (touch_num + SENS_TOUCH_PAD_OUTEN2_S)) | \
((1 << (touch_num + SENS_TOUCH_PAD_OUTEN1_S))));
toch_pad_io_init(touch_num);
touch_pad_counter_init(touch_num);
touch_pad_power_on(touch_num);
//force oneTime test start
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M);
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, 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) {};
uint8_t shift = (touch_num & 1) ? SENS_TOUCH_MEAS_OUT1_S : SENS_TOUCH_MEAS_OUT0_S;
*touch_value = READ_PERI_REG(SENS_SAR_TOUCH_OUT1_REG + (touch_num / 2) * 4) >> shift;
WRITE_PERI_REG(SENS_SAR_TOUCH_ENABLE_REG, v0);
//force oneTime test end
//clear touch force ,select the Touch mode is Timer
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_EN_M);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL2_REG, SENS_TOUCH_START_FORCE_M);
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
/*---------------------------------------------------------------
ADC
---------------------------------------------------------------*/
static esp_err_t adc1_pad_get_io_num(adc1_channel_t channel, gpio_num_t *gpio_num)
{
RTC_MODULE_CHECK(channel < ADC1_CHANNEL_MAX, "ADC Channel Err", ESP_ERR_INVALID_ARG);
switch (channel) {
case ADC1_CHANNEL_0:
*gpio_num = 36;
break;
case ADC1_CHANNEL_1:
*gpio_num = 37;
break;
case ADC1_CHANNEL_2:
*gpio_num = 38;
break;
case ADC1_CHANNEL_3:
*gpio_num = 39;
break;
case ADC1_CHANNEL_4:
*gpio_num = 32;
break;
case ADC1_CHANNEL_5:
*gpio_num = 33;
break;
case ADC1_CHANNEL_6:
*gpio_num = 34;
break;
case ADC1_CHANNEL_7:
*gpio_num = 35;
break;
default:
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
static esp_err_t adc1_pad_init(adc1_channel_t channel)
{
gpio_num_t gpio_num = 0;
ADC1_CHECK_FUNCTION_RET(adc1_pad_get_io_num(channel, &gpio_num));
ADC1_CHECK_FUNCTION_RET(rtc_gpio_init(gpio_num));
ADC1_CHECK_FUNCTION_RET(rtc_gpio_output_disable(gpio_num));
ADC1_CHECK_FUNCTION_RET(rtc_gpio_input_disable(gpio_num));
ADC1_CHECK_FUNCTION_RET(gpio_set_pull_mode(gpio_num, GPIO_FLOATING));
return ESP_OK;
}
esp_err_t adc1_config_channel_atten(adc1_channel_t channel, adc_atten_t atten)
{
RTC_MODULE_CHECK(channel < ADC1_CHANNEL_MAX, "ADC Channel Err", ESP_ERR_INVALID_ARG);
RTC_MODULE_CHECK(atten <= ADC_ATTEN_11db, "ADC Atten Err", ESP_ERR_INVALID_ARG);
adc1_pad_init(channel);
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_BITS(SENS_SAR_ATTEN1_REG, 3, atten, (channel * 2)); //SAR1_atten
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
esp_err_t adc1_config_width(adc_bits_width_t width_bit)
{
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_BITS(SENS_SAR_START_FORCE_REG, SENS_SAR1_BIT_WIDTH_V, width_bit, SENS_SAR1_BIT_WIDTH_S); //SAR2_BIT_WIDTH[1:0]=0x3, SAR1_BIT_WIDTH[1:0]=0x3
//Invert the adc value,the Output value is invert
SET_PERI_REG_MASK(SENS_SAR_READ_CTRL_REG, SENS_SAR1_DATA_INV);
//Set The adc sample width,invert adc value,must
SET_PERI_REG_BITS(SENS_SAR_READ_CTRL_REG, SENS_SAR1_SAMPLE_BIT_V, width_bit, SENS_SAR1_SAMPLE_BIT_S); //digital sar1_bit_width[1:0]=3
portEXIT_CRITICAL(&rtc_spinlock);
return ESP_OK;
}
int adc1_get_voltage(adc1_channel_t channel)
{
uint16_t adc_value;
uint8_t atten = 0;
RTC_MODULE_CHECK(channel < ADC1_CHANNEL_MAX, "ADC Channel Err", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//Adc Controler is Rtc module,not ulp coprocessor
SET_PERI_REG_BITS(SENS_SAR_MEAS_START1_REG, 1, 1, SENS_MEAS1_START_FORCE_S); //force pad mux and force start
//Bit1=0:Fsm Bit1=1(Bit0=0:PownDown Bit10=1:Powerup)
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR, 0, SENS_FORCE_XPD_SAR_S); //force XPD_SAR=0, use XPD_FSM
//Disable Amp Bit1=0:Fsm Bit1=1(Bit0=0:PownDown Bit10=1:Powerup)
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_AMP, 0x2, SENS_FORCE_XPD_AMP_S); //force XPD_AMP=0
//Open the ADC1 Data port Not ulp coprocessor
SET_PERI_REG_BITS(SENS_SAR_MEAS_START1_REG, 1, 1, SENS_SAR1_EN_PAD_FORCE_S); //open the ADC1 data port
//Select channel
SET_PERI_REG_BITS(SENS_SAR_MEAS_START1_REG, SENS_SAR1_EN_PAD, (1 << channel), SENS_SAR1_EN_PAD_S); //pad enable
SET_PERI_REG_BITS(SENS_SAR_MEAS_CTRL_REG, 0xfff, 0x0, SENS_AMP_RST_FB_FSM_S); //[11:8]:short ref ground, [7:4]:short ref, [3:0]:rst fb
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT1_REG, SENS_SAR_AMP_WAIT1, 0x1, SENS_SAR_AMP_WAIT1_S);
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT1_REG, SENS_SAR_AMP_WAIT2, 0x1, SENS_SAR_AMP_WAIT2_S);
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_SAR_AMP_WAIT3, 0x1, SENS_SAR_AMP_WAIT3_S);
while (GET_PERI_REG_BITS2(SENS_SAR_SLAVE_ADDR1_REG, 0x7, SENS_MEAS_STATUS_S) != 0); //wait det_fsm==0
SET_PERI_REG_BITS(SENS_SAR_MEAS_START1_REG, 1, 0, SENS_MEAS1_START_SAR_S); //start force 0
SET_PERI_REG_BITS(SENS_SAR_MEAS_START1_REG, 1, 1, SENS_MEAS1_START_SAR_S); //start force 1
while (GET_PERI_REG_MASK(SENS_SAR_MEAS_START1_REG, SENS_MEAS1_DONE_SAR) == 0) {}; //read done
adc_value = GET_PERI_REG_BITS2(SENS_SAR_MEAS_START1_REG, SENS_MEAS1_DATA_SAR, SENS_MEAS1_DATA_SAR_S);
portEXIT_CRITICAL(&rtc_spinlock);
return adc_value;
}
/*---------------------------------------------------------------
DAC
---------------------------------------------------------------*/
static esp_err_t dac_pad_get_io_num(dac_channel_t channel, gpio_num_t *gpio_num)
{
RTC_MODULE_CHECK(channel < DAC_CHANNEL_MAX, "DAC Channel Err", ESP_ERR_INVALID_ARG);
switch (channel) {
case DAC_CHANNEL_1:
*gpio_num = 25;
break;
case DAC_CHANNEL_2:
*gpio_num = 26;
break;
default:
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
static esp_err_t dac_rtc_pad_init(dac_channel_t channel)
{
RTC_MODULE_CHECK(channel < DAC_CHANNEL_MAX, "DAC Channel Err", ESP_ERR_INVALID_ARG);
gpio_num_t gpio_num = 0;
dac_pad_get_io_num(channel, &gpio_num);
rtc_gpio_init(gpio_num);
rtc_gpio_output_disable(gpio_num);
rtc_gpio_input_disable(gpio_num);
rtc_gpio_pullup_dis(gpio_num);
rtc_gpio_pulldown_dis(gpio_num);
return ESP_OK;
}
static esp_err_t dac_out_enable(dac_channel_t channel)
{
if (channel == DAC_CHANNEL_1) {
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_XPD_DAC | RTC_IO_PDAC1_DAC_XPD_FORCE);
portEXIT_CRITICAL(&rtc_spinlock);
} else if (channel == DAC_CHANNEL_2) {
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(RTC_IO_PAD_DAC2_REG, RTC_IO_PDAC2_XPD_DAC | RTC_IO_PDAC2_DAC_XPD_FORCE);
portEXIT_CRITICAL(&rtc_spinlock);
} else {
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
static esp_err_t dac_out_disable(dac_channel_t channel)
{
if (channel == DAC_CHANNEL_1) {
portENTER_CRITICAL(&rtc_spinlock);
CLEAR_PERI_REG_MASK(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_XPD_DAC | RTC_IO_PDAC1_DAC_XPD_FORCE);
portEXIT_CRITICAL(&rtc_spinlock);
} else if (channel == DAC_CHANNEL_2) {
portENTER_CRITICAL(&rtc_spinlock);
CLEAR_PERI_REG_MASK(RTC_IO_PAD_DAC2_REG, RTC_IO_PDAC2_XPD_DAC | RTC_IO_PDAC2_DAC_XPD_FORCE);
portEXIT_CRITICAL(&rtc_spinlock);
} else {
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
esp_err_t dac_out_voltage(dac_channel_t channel, uint8_t dac_value)
{
RTC_MODULE_CHECK(channel < DAC_CHANNEL_MAX, "DAC Channel Err", ESP_ERR_INVALID_ARG);
portENTER_CRITICAL(&rtc_spinlock);
//Disable Tone
CLEAR_PERI_REG_MASK(SENS_SAR_DAC_CTRL1_REG, SENS_SW_TONE_EN);
//Disable Channel Tone
if (channel == DAC_CHANNEL_1) {
CLEAR_PERI_REG_MASK(SENS_SAR_DAC_CTRL2_REG, SENS_DAC_CW_EN1_M);
} else if (channel == DAC_CHANNEL_2) {
CLEAR_PERI_REG_MASK(SENS_SAR_DAC_CTRL2_REG, SENS_DAC_CW_EN2_M);
}
//Set the Dac value
if (channel == DAC_CHANNEL_1) {
SET_PERI_REG_BITS(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_DAC, dac_value, RTC_IO_PDAC1_DAC_S); //dac_output
} else if (channel == DAC_CHANNEL_2) {
SET_PERI_REG_BITS(RTC_IO_PAD_DAC2_REG, RTC_IO_PDAC2_DAC, dac_value, RTC_IO_PDAC2_DAC_S); //dac_output
}
portEXIT_CRITICAL(&rtc_spinlock);
//dac pad init
dac_rtc_pad_init(channel);
dac_out_enable(channel);
return ESP_OK;
}
/*---------------------------------------------------------------
HALL SENSOR
---------------------------------------------------------------*/
static int hall_sensor_get_value() //hall sensor without LNA
{
int Sens_Vp0;
int Sens_Vn0;
int Sens_Vp1;
int Sens_Vn1;
int hall_value;
portENTER_CRITICAL(&rtc_spinlock);
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_XPD_HALL_FORCE_M); // hall sens force enable
SET_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_XPD_HALL); // xpd hall
SET_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_HALL_PHASE_FORCE_M); // phase force
CLEAR_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_HALL_PHASE); // hall phase
Sens_Vp0 = adc1_get_voltage(ADC1_CHANNEL_0);
Sens_Vn0 = adc1_get_voltage(ADC1_CHANNEL_3);
SET_PERI_REG_MASK(RTC_IO_HALL_SENS_REG, RTC_IO_HALL_PHASE);
Sens_Vp1 = adc1_get_voltage(ADC1_CHANNEL_0);
Sens_Vn1 = adc1_get_voltage(ADC1_CHANNEL_3);
SET_PERI_REG_BITS(SENS_SAR_MEAS_WAIT2_REG, SENS_FORCE_XPD_SAR, 0, SENS_FORCE_XPD_SAR_S);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_XPD_HALL_FORCE);
CLEAR_PERI_REG_MASK(SENS_SAR_TOUCH_CTRL1_REG, SENS_HALL_PHASE_FORCE);
portEXIT_CRITICAL(&rtc_spinlock);
hall_value = (Sens_Vp1 - Sens_Vp0) - (Sens_Vn1 - Sens_Vn0);
return hall_value;
}
int hall_sensor_read()
{
adc1_pad_init(ADC1_CHANNEL_0);
adc1_pad_init(ADC1_CHANNEL_3);
adc1_config_channel_atten(ADC1_CHANNEL_0, ADC_ATTEN_0db);
adc1_config_channel_atten(ADC1_CHANNEL_3, ADC_ATTEN_0db);
return hall_sensor_get_value();
}
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