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https://github.com/RIOT-OS/RIOT.git
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114 lines
4.6 KiB
C
114 lines
4.6 KiB
C
/*
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* Copyright (C) 2022 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup cpu_esp32
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* @{
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*
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* @file
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* @brief Architecture-specific ADC/DAC definitions for ESP32 variant (family)
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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*
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* @}
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*/
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#include "board.h"
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#include "adc_arch_private.h"
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#include "esp_common.h"
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#include "soc/adc_channel.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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/**
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* @brief ADC hardware descriptor table (for internal use only)
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*
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* Reference: Technical Reference Manual, Section 4.11 Table 19
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* https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf
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*
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* @note The index of entries in the table MUST correspond to the
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* RTCIO GPIO number.
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*/
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const _adc_hw_desc_t _adc_hw[] = {
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/* rtcio, gpio, adc_ctrl, adc_channel, pad_name */
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{ RTCIO_GPIO(0), ADC1_CHANNEL_0_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_0, "SENSOR_VP" },
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{ RTCIO_GPIO(1), ADC1_CHANNEL_1_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_1, "SENSOR_CAPP" },
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{ RTCIO_GPIO(2), ADC1_CHANNEL_2_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_2, "SENSOR_CAPN" },
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{ RTCIO_GPIO(3), ADC1_CHANNEL_3_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_3, "SENSOR_VN" },
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{ RTCIO_GPIO(4), ADC1_CHANNEL_6_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_6, "VDET_1" },
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{ RTCIO_GPIO(5), ADC1_CHANNEL_7_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_7, "VDET_2" },
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{ RTCIO_GPIO(6), ADC2_CHANNEL_8_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_8, "GPIO25" },
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{ RTCIO_GPIO(7), ADC2_CHANNEL_9_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_9, "GPIO26" },
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{ RTCIO_GPIO(8), ADC1_CHANNEL_5_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_5, "32K_XN" },
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{ RTCIO_GPIO(9), ADC1_CHANNEL_4_GPIO_NUM, ADC_UNIT_1, ADC_CHANNEL_4, "32K_XP" },
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{ RTCIO_GPIO(10), ADC2_CHANNEL_0_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_0, "GPIO4" },
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{ RTCIO_GPIO(11), ADC2_CHANNEL_1_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_1, "GPIO0" },
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{ RTCIO_GPIO(12), ADC2_CHANNEL_2_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_2, "GPIO2" },
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{ RTCIO_GPIO(13), ADC2_CHANNEL_3_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_3, "MTDO" },
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{ RTCIO_GPIO(14), ADC2_CHANNEL_4_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_4, "MTCK" },
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{ RTCIO_GPIO(15), ADC2_CHANNEL_5_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_5, "MTDI" },
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{ RTCIO_GPIO(16), ADC2_CHANNEL_6_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_6, "MTMS" },
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{ RTCIO_GPIO(17), ADC2_CHANNEL_7_GPIO_NUM, ADC_UNIT_2, ADC_CHANNEL_7, "GPIO27" },
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};
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/**
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* @brief GPIO to RTC IO map (for internal use only)
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*
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* Reference: Technical Reference Manual, Section 4.11 Table 19
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* https://www.espressif.com/sites/default/files/documentation/esp32_technical_reference_manual_en.pdf
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*/
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const gpio_t _gpio_rtcio_map[] = {
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RTCIO_GPIO(11), /* GPIO0 */
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RTCIO_NA, /* GPIO1 */
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RTCIO_GPIO(12), /* GPIO2 */
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RTCIO_NA, /* GPIO3 */
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RTCIO_GPIO(10), /* GPIO4 */
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RTCIO_NA, /* GPIO5 */
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RTCIO_NA, /* GPIO6 */
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RTCIO_NA, /* GPIO7 */
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RTCIO_NA, /* GPIO8 */
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RTCIO_NA, /* GPIO9 */
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RTCIO_NA, /* GPIO10 */
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RTCIO_NA, /* GPIO11 */
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RTCIO_GPIO(15), /* GPIO12 MTDI */
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RTCIO_GPIO(14), /* GPIO13 MTCK */
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RTCIO_GPIO(16), /* GPIO14 MTMS */
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RTCIO_GPIO(13), /* GPIO15 MTDO */
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RTCIO_NA, /* GPIO16 */
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RTCIO_NA, /* GPIO17 */
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RTCIO_NA, /* GPIO18 */
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RTCIO_NA, /* GPIO19 */
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RTCIO_NA, /* GPIO20 */
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RTCIO_NA, /* GPIO21 */
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RTCIO_NA, /* GPIO22 */
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RTCIO_NA, /* GPIO23 */
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RTCIO_NA, /* GPIO24 */
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RTCIO_GPIO(6), /* GPIO25 */
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RTCIO_GPIO(7), /* GPIO26 */
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RTCIO_GPIO(17), /* GPIO27 */
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RTCIO_NA, /* GPIO28 */
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RTCIO_NA, /* GPIO29 */
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RTCIO_NA, /* GPIO30 */
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RTCIO_NA, /* GPIO31 */
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RTCIO_GPIO(9), /* GPIO32 32K_XP */
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RTCIO_GPIO(8), /* GPIO33 32K_XN */
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RTCIO_GPIO(4), /* GPIO34 VDET_1 */
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RTCIO_GPIO(5), /* GPIO35 VDET_2 */
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RTCIO_GPIO(0), /* GPIO36 SENSOR_VP */
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RTCIO_GPIO(1), /* GPIO37 SENSOR_CAPP */
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RTCIO_GPIO(2), /* GPIO38 SENSOR_CAPN */
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RTCIO_GPIO(3), /* GPIO39 SENSOR_VN */
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};
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_Static_assert(ARRAY_SIZE(_adc_hw) == SOC_RTCIO_PIN_COUNT,
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"size of _adc_hw does not match SOC_RTCIO_PIN_COUNT");
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_Static_assert(ARRAY_SIZE(_gpio_rtcio_map) == SOC_GPIO_PIN_COUNT,
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"size of _gpio_rtcio_map does not match SOC_GPIO_PIN_COUNT");
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