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Example main.c code for the Maxim Integrated DS7505 low voltage high accurate temperature sensor. Hosted on the MAX32630FTHR. C and C++ sample source code provided.
Dependencies: DS7505_Low_Voltage_Temperature_Sensor max32630fthr USBDevice
Diff: main.cpp
- Revision:
- 0:3037141e268d
- Child:
- 2:2236f57e3547
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Apr 27 09:51:03 2019 +0000 @@ -0,0 +1,251 @@ +/******************************************************************************* +* Copyright (C) 2019 Maxim Integrated Products, Inc., All Rights Reserved. +* +* Permission is hereby granted, free of charge, to any person obtaining a +* copy of this software and associated documentation files (the "Software"), +* to deal in the Software without restriction, including without limitation +* the rights to use, copy, modify, merge, publish, distribute, sublicense, +* and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included +* in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES +* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +* OTHER DEALINGS IN THE SOFTWARE. +* +* Except as contained in this notice, the name of Maxim Integrated +* Products, Inc. shall not be used except as stated in the Maxim Integrated +* Products, Inc. Branding Policy. +* +* The mere transfer of this software does not imply any licenses +* of trade secrets, proprietary technology, copyrights, patents, +* trademarks, maskwork rights, or any other form of intellectual +* property whatsoever. Maxim Integrated Products, Inc. retains all +* ownership rights. +******************************************************************************* +*/ +#include "mbed.h" +#include "max32630fthr.h" +#include "ds7505.h" +#include "ds7505_cpp.h" +#include "USBSerial.h" + +Serial pc(USBTX, USBRX); // Use USB debug probe for serial link +Serial uart(P2_1, P2_0); +void wait_sec_prompt(uint8_t time) +{ + // Ports and serial connections + uint32_t i; + for (i = 0; i < time; i++) { + pc.printf("."); + wait(1); + } + pc.printf("\r\n"); +} + + +MAX32630FTHR pegasus(MAX32630FTHR::VIO_1V8); + +DigitalOut rLED(LED1); +DigitalOut gLED(LED2); +DigitalOut bLED(LED3); + +I2C i2cBus(P3_4, P3_5); + +void blink_timer(void) { + gLED = !gLED; /* blink the green LED */ +} + +// main() runs in its own thread in the OS +// (note the calls to Thread::wait below for delays) +/** +* @brief Sample main program for DS7505 +* @version 1.0000.0000 +* +* @details Sample main program for DS7505 +* The prints are sent to the terminal window (9600, 8n1). +* The program sets the GPIOs to 1.8V and the program +* configures the chip and reads temperatures. +* To run the program, drag and drop the .bin file into the +* DAPLINK folder. After it finishes flashing, cycle the power or +* reset the Pegasus (MAX32630FTHR) after flashing by pressing the button on +* the Pegasus next to the battery connector or the button +* on the MAXREFDES100HDK. +*/ +int main() +{ +#define WAIT_TIME 8 + uint32_t i; + float temperature; + uint8_t cfg; + DigitalOut rLED(LED1, LED_OFF); + DigitalOut gLED(LED2, LED_OFF); + DigitalOut bLED(LED3, LED_OFF); + gLED = LED_ON; + Ticker ticker; // calls a callback repeatedly with a timeout + ticker.attach(callback(&blink_timer), 0.5f); /* set timer for 0.5 second */ + pc.baud(9600); // Baud rate = 115200 + pc.printf("DS7505 Digital Thermometer and " + "Thermostat example source code.\r\n"); + pc.printf("\r\n"); + uint8_t i2c_addr = DS7505_I2C_SLAVE_ADR_00; + DS7505 temp_sensor(i2cBus, i2c_addr); + i2cBus.frequency(400000); + /* Configure for time out enabled, normal format, fault filter 6, + active low polarity, comparator mode, continuous + */ + temp_sensor.write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_9BIT | DS7505_CFG_FAULT_FILTER_6 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_COMPARATOR_MODE | + DS7505_CFG_CONTINUOUS)); + for (i = 0; i < 10; i++) { + wait(DS7505_WAIT_CONV_TIME_9BIT); + temperature = + temp_sensor.read_reg_as_temperature(DS7505_REG_TEMPERATURE); + pc.printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + } + temp_sensor.read_cfg_reg(&cfg); + pc.printf("Configuration Register = 0x%02Xh \r\n", cfg); +#if 0 + temp_sensor.write_trip_low_thyst(-63.9375); + temperature = + temp_sensor.read_reg_as_temperature(DS7505_REG_THYST_LOW_TRIP); + pc.printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + + temp_sensor.write_trip_high_tos(64.0625f); + temperature = temp_sensor.read_reg_as_temperature(DS7505_REG_TOS_HIGH_TRIP); + pc.printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + pc.printf("\r\n\r\n"); +#endif + + pc.printf("\r\n"); + temp_sensor.write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_12BIT | DS7505_CFG_FAULT_FILTER_4 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_INTERRUPT_MODE | + DS7505_CFG_SHUTDOWN)); + for (i = 0; i < 8; i++) { + wait_sec_prompt(WAIT_TIME); /* leave it in shutdown mode for a while */ + /* Configure for one shot, time out disabled, extended format, fault filter 4, + active low polarity, comparator mode, shutdown + */ + temp_sensor.write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_12BIT | DS7505_CFG_FAULT_FILTER_4 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_INTERRUPT_MODE | + DS7505_CFG_SHUTDOWN)); + wait(DS7505_WAIT_CONV_TIME_12BIT); + temperature = + temp_sensor.read_reg_as_temperature(DS7505_REG_TEMPERATURE); + pc.printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + } + temp_sensor.read_cfg_reg(&cfg); + pc.printf("Configuration Register = 0x%02Xh \r\n", cfg); + + pc.printf("\r\n\r\n"); + +#if 0 + temp_sensor.write_trip_low_thyst(-55.0f); + temperature = + temp_sensor.read_reg_as_temperature(DS7505_REG_THYST_LOW_TRIP); + pc.printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + + temp_sensor.write_trip_high_tos(125.0f); + temperature = temp_sensor.read_reg_as_temperature(DS7505_REG_TOS_HIGH_TRIP); + pc.printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + pc.printf("\r\n\r\n"); +#endif + + /*************************************************************************** + * Call the C code version of the driver + *************************************************************************** + */ +#include "ds7505_c.h" + pc.printf("C implementation of the code\r\n"); + ds7505_init(i2c_addr); + /* Configure for time out enabled, normal format, fault filter 6, + active low polarity, comparator mode, continuous + */ + ds7505_write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_9BIT | DS7505_CFG_FAULT_FILTER_6 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_COMPARATOR_MODE | + DS7505_CFG_CONTINUOUS), i2cBus); + for (i = 0; i < 10; i++) { + wait(DS7505_WAIT_CONV_TIME_9BIT); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_TEMPERATURE, + i2cBus); + pc.printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + } + + ds7505_read_cfg_reg(&cfg, i2cBus); + pc.printf("Configuration Register = 0x%02Xh \r\n", cfg); + +#if 0 + ds7505_write_trip_low_thyst(-63.9375, i2cBus); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_THYST_LOW_TRIP, + i2cBus); + pc.printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, ds7505_celsius_to_fahrenheit(temperature)); + + ds7505_write_trip_high_tos(64.0625f, i2cBus); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_TOS_HIGH_TRIP, + i2cBus); + pc.printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, ds7505_celsius_to_fahrenheit(temperature)); +#endif + + pc.printf("\r\n"); + ds7505_write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_12BIT | DS7505_CFG_FAULT_FILTER_4 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_INTERRUPT_MODE | + DS7505_CFG_SHUTDOWN), i2cBus); + for (i = 0; i < 8; i++) { + wait_sec_prompt(WAIT_TIME); /* leave it in shutdown mode for a while */ + /* Configure for one shot, time out disabled, extended format, fault filter 4, + active low polarity, comparator mode, shutdown + */ + ds7505_write_cfg_reg(uint8_t( + DS7505_CFG_RESOLUTION_12BIT | DS7505_CFG_FAULT_FILTER_4 | + DS7505_CFG_OS_POLARITY_ACT_LOW | DS7505_CFG_INTERRUPT_MODE | + DS7505_CFG_SHUTDOWN), i2cBus); + wait(DS7505_WAIT_CONV_TIME_12BIT); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_TEMPERATURE, + i2cBus); + pc.printf("Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, temp_sensor.celsius_to_fahrenheit(temperature)); + } + ds7505_read_cfg_reg(&cfg, i2cBus); + pc.printf("Configuration Register = 0x%02Xh \r\n", cfg); + +#if 0 + ds7505_write_trip_low_thyst(-55, i2cBus); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_THYST_LOW_TRIP, + i2cBus); + pc.printf("Thyst Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, ds7505_celsius_to_fahrenheit(temperature)); + + ds7505_write_trip_high_tos(125.0f, i2cBus); + temperature = ds7505_read_reg_as_temperature(DS7505_REG_TOS_HIGH_TRIP, + i2cBus); + pc.printf("TOS Temperature = %3.4f Celsius, %3.4f Fahrenheit\r\n", + temperature, ds7505_celsius_to_fahrenheit(temperature)); +#endif + pc.printf("\r\n\r\n\r\n"); + + + while (true) { + } +} + + \ No newline at end of file