The sample code to control MAX77756. It controls the output voltage from 1500mV to 7500mV in 50mV step. It was tested using MAX32630FTHR and MAX77756 Evaluation Kit.
Dependencies: max32630fthr max77756 mbed
Fork of MAX77756_Demo by
Diff: main.cpp
- Revision:
- 0:53b089c2fe50
diff -r 000000000000 -r 53b089c2fe50 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Sep 18 10:53:47 2017 +0000
@@ -0,0 +1,84 @@
+/**********************************************************************
+* Copyright (C) 2017 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 "max77756.h"
+
+int main()
+{
+ uint32_t rData;
+ uint32_t outVoltage = 1500;
+
+ DigitalOut rLED(LED1, LED_OFF);
+ DigitalOut gLED(LED2, LED_OFF);
+ DigitalOut bLED(LED3, LED_OFF);
+
+ I2C i2cBus(P5_7, P6_0);
+ i2cBus.frequency(400000);
+ MAX77756 max77756(&i2cBus);
+
+ wait_ms(100);
+
+ max77756.config(MAX77756::S_SPECTRUM_OFF, MAX77756::S_START_8_ms,
+ MAX77756::I_PEAK_LIMIT_700_mA, MAX77756::EN_LOGICAL_OR);
+
+ while(1) {
+
+ rData = max77756.outEnable(MAX77756::DISABLE);
+ if (rData < 0) {
+ rLED = 1;
+ continue;
+ }
+ wait_ms(1000);
+
+ rData = max77756.setVout(outVoltage);
+ if (rData < 0) {
+ rLED = 1;
+ continue;
+ }
+ rData = max77756.outEnable(MAX77756::ENABLE);
+ if (rData < 0) {
+ rLED = 1;
+ continue;
+ }
+
+ outVoltage += 50;
+ if (outVoltage > 7500) {
+ outVoltage = 1500;
+ }
+
+ gLED = !gLED;
+ wait_ms(1000);
+ }
+}
+

Step-down DC-DC converter MAX77756