#include?“max31856.h“

const?char?*TAG?=?“MAX31856“;

void?max31856_write_register（spi_device_handle_t?spi_handle?uint8_t?address?uint8_t?data）?{
????esp_err_t?ret;
????spi_transaction_t?spi_transaction;
????memset（?&spi_transaction?0?sizeof（?spi_transaction_t?）?）;
????uint8_t?tx_data[1]?=?{address?|?0x80};

????gpio_set_level（PIN_NUM_CS?0）;
????spi_transaction.flags?=?SPI_TRANS_USE_RXDATA;
????spi_transaction.length?=?8;
????spi_transaction.tx_buffer?=?tx_data;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;

????tx_data[0]?=?data;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;???
????gpio_set_level（PIN_NUM_CS?1）;
}

uint8_t?max31856_read_register（spi_device_handle_t?spi_handle?uint8_t?address）?{
????esp_err_t?ret;
????spi_transaction_t?spi_transaction;
????memset（?&spi_transaction?0?sizeof（?spi_transaction_t?）?）;
????uint8_t?tx_data[1]?=?{address?&?0x7F};

????gpio_set_level（PIN_NUM_CS?0）;
????spi_transaction.flags?=?SPI_TRANS_USE_RXDATA;
????spi_transaction.length?=?8;
????spi_transaction.tx_buffer?=?tx_data;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;

????tx_data[0]?=?0xFF;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;
????gpio_set_level（PIN_NUM_CS?1）;
????uint8_t?reg_value?=?spi_transaction.rx_data[0];
????return?reg_value;
}

uint8_t?max31856_read_fast_register（spi_device_handle_t?spi_handle?uint8_t?address）?{
????esp_err_t?ret;
????spi_transaction_t?spi_transaction;
????memset（?&spi_transaction?0?sizeof（?spi_transaction_t?）?）;
????uint8_t?tx_data[2]?=?{address?&?0x7F?0xFF};

????gpio_set_level（PIN_NUM_CS?0）;
????spi_transaction.flags?=?SPI_TRANS_USE_RXDATA;
????spi_transaction.length?=?16;
????spi_transaction.tx_buffer?=?tx_data;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;
????gpio_set_level（PIN_NUM_CS?1）;
????uint8_t?reg_value?=?spi_transaction.rx_data[0];
????return?reg_value;
}

uint16_t?max31856_read_register16（spi_device_handle_t?spi_handle?uint8_t?address）?{
????esp_err_t?ret;
????spi_transaction_t?spi_transaction;
????memset（?&spi_transaction?0?sizeof（?spi_transaction_t?）?）;
????uint8_t?tx_data[1]?=?{address?&?0x7F};

????gpio_set_level（PIN_NUM_CS?0）;
????spi_transaction.length?=?8;
????spi_transaction.flags?=?SPI_TRANS_USE_RXDATA;
????spi_transaction.tx_buffer?=?tx_data;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;

????tx_data[0]?=?0xFF;
????spi_transaction.length?=?8;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;
????uint8_t?b1?=?spi_transaction.rx_data[0];

????spi_transaction.length?=?8;
????ret?=?spi_device_transmit（spi_handle?&spi_transaction）;
????ESP_ERROR_CHECK（ret）;
????uint8_t?b2?=?spi_transaction.rx_data[0];
????gpio_set_level（PIN_NUM_CS?1）;

????uint16_t?reg_value?=?（（b1?<????return?reg_value;
}

uin

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-11-15?12:13??CJMCU-31856?資料\
?????文件??????118794??2015-11-07?11:50??CJMCU-31856?資料\CJMCU-31856原理圖.pdf
?????目錄???????????0??2018-11-15?12:13??CJMCU-31856?資料\max31856-c\
?????文件?????????491??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\.gitignore
?????目錄???????????0??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\components\
?????目錄???????????0??2018-11-15?12:13??CJMCU-31856?資料\max31856-c\components\max31856\
?????文件??????????57??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\components\max31856\component.mk
?????文件????????9745??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\components\max31856\max31856.c
?????文件????????2705??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\components\max31856\max31856.h
?????文件????????1067??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\LICENSE
?????目錄???????????0??2018-11-15?12:13??CJMCU-31856?資料\max31856-c\main\
?????文件?????????145??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\main\component.mk
?????文件????????2249??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\main\example.c
?????文件????????1116??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\main\Kconfig.projbuild
?????文件?????????180??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\Makefile
?????文件????????1204??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\README.md
?????文件???????13101??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\sdkconfig
?????文件???????????3??2018-09-19?05:16??CJMCU-31856?資料\max31856-c\sdkconfig.defaults
?????文件????????9997??2016-08-29?11:09??CJMCU-31856?資料\MAX31856-master.zip
?????文件??????712567??2015-09-19?18:03??CJMCU-31856?資料\MAX31856.pdf
?????文件?????1506984??2016-03-21?09:00??CJMCU-31856?資料\MAX31856_cn.pdf
?????文件???????92777??2017-05-04?11:50??CJMCU-31856?資料\尺寸.jpg
?????文件????????7742??2019-12-30?15:57??Adafruit_MAX31856-master.zip