Maxim Integrated
Driver C++ source code for MAX5216/MAX5214 16-bit/14-bit DAC SPI (50MHz) bus ICs. Low power Digital-to_Analog Converter chips which accept supply voltages of 2.7V to 5.5V. Features Rail-to-Rail Buffered Output Operation and Safe Power-On Reset (POR) to Zero DAC Output.
Dependents: MAX5216_16_Bit_DAC_Hello_Code
Fork of
MAX5487_Digital_Pot_Potentiometer_Rheostat_Resistor_Wiper
by 
Kevin Jung
Revision 5:bd8dbd9be2ac, committed 2018-08-13
- Comitter:
- phonemacro
- Date:
- Mon Aug 13 04:18:09 2018 +0000
- Parent:
- 4:280d1e05f2ca
- Child:
- 6:cd8d96483262
- Commit message:
- v1.0000.1, Add Power Down command. Remove NOP command. Increase SPI bus baud rate to 24 MHz.
Changed in this revision
| MAX5216.cpp | Show annotated file Show diff for this revision Revisions of this file |
| MAX5216.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/MAX5216.cpp Sun Aug 12 10:04:09 2018 +0000
+++ b/MAX5216.cpp Mon Aug 13 04:18:09 2018 +0000
@@ -37,50 +37,44 @@
m_pin = 1;
}
-void MAX5216::writeCommand(setting_t setting, uint32_t value)
+void MAX5216::writeCommand(setting_t setting, uint32_t value, pwrDwnMode_t mode)
{
char val[3] = {0, 0, 0};
int i;
-
- if(value > MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)]) {
- printf("value in writeCommand is too big: %X\r\n", value);
- return;
- }
m_pin = 0;
- if (m_ic_variant == MAX5214_IC) { // MAX5214 is 14 bits
- value &= MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)];
- } else { // MAX5216 is 16 bits
- value &= MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)];
- value = value << 6; // least significant 6 bits are not used
- val[2] = value & 0xFF;
+ if (setting == PwrDwn_Reg) {
+ val[0] = char(value<<2);
+ val[0] |= char(setting);
+ for (i = 0; i < MAX521X_NUM_BYTES_SPI[(uint8_t)(m_ic_variant)]; i++) {
+ m_spi.write(val[i]);
+ }
+ } else if (setting == WrtThru_Reg){
+
+ if(value > MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)]) {
+ printf("value in writeCommand is too big: %X\r\n", value);
+ return;
+ }
+ if (m_ic_variant == MAX5214_IC) { // MAX5214 is 14 bits
+ value &= MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)];
+ } else { // MAX5216 is 16 bits
+ value &= MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)];
+ value = value << 6; // least significant 6 bits are not used
+ val[2] = value & 0xFF;
+ value = value >> 8;
+ }
+ val[1] = value & 0xFF;
value = value >> 8;
- }
- val[1] = value & 0xFF;
- value = value >> 8;
- val[0] = value;
- val[0] |= setting;
- //printf("mask %X, Value %X, val 0, 1, 2 %02X %02X %02X \r\n", MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)],value, val[0], val[1], val[2]);
-
- for (i = 0; i < MAX521X_NUM_BYTES_SPI[(uint8_t)(m_ic_variant)]; i++) {
- m_spi.write(val[i]);
+ val[0] = value;
+ val[0] |= setting;
+ // printf("mask %X, Value %X, val 0, 1, 2 %02X %02X %02X \r\n", MAX521X_IC_BIT_MASK[(uint8_t)(m_ic_variant)],value, val[0], val[1], val[2]);
+ for (i = 0; i < MAX521X_NUM_BYTES_SPI[(uint8_t)(m_ic_variant)]; i++) {
+ m_spi.write(val[i]);
+ }
}
m_pin = 1;
}
-#if 0 // tbd
-void MAX5216::writeCommand(setting_t setting, pwrDwnMode_t mode)
-{
- char val[3] = {0, 0, 0};
- int i;
- m_pin = 0;
- val[0] = setting | (char)(mode);
- for (i = 0; i < MAX521X_NUM_BYTES_SPI[(uint8_t)(m_ic_variant)]; i++) {
- m_spi.write(val[i]);
- }
- m_pin = 1;
-
-}
-#endif
+
MAX5216::~MAX5216(void)
{
//empty block
--- a/MAX5216.h Sun Aug 12 10:04:09 2018 +0000
+++ b/MAX5216.h Mon Aug 13 04:18:09 2018 +0000
@@ -1,9 +1,37 @@
/*******************************************************************************
+* Copyright (C) 2018 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.
+*******************************************************************************
* @file MAX5216.h
-
*******************************************************************************
*/
-
#ifndef MAX5216_H
#define MAX5216_H
@@ -22,7 +50,7 @@
/**
* @brief 16-bit, 14-bit digital-to-analog converters (DACs)
* for the MAX5216, MAX5214.
-* @version 1.0000.0
+* @version 1.0000.1
*
* @details The MAX5214/MAX5216 accept a wide 2.7V to 5.5V supply
* voltage range. Power consumption is extremely low
@@ -54,7 +82,7 @@
* wait(1.0);
* dac.writeCommand(MAX5216::WrtThru_Reg, 0x7FFF);
* wait(1.0);
-* dac.writeCommand(MAX5216::NoOp_Reg, 0xFFFF);
+* dac.writeCommand(MAX5216::PwrDwn_Reg, MAX5216::PwrDwnHiZ);
* }
* @endcode
*/
@@ -73,12 +101,11 @@
/**
* @brief Commands supported by the DAC
- * @details The upper 2 bits of the first byte define the commands
+ * @details The upper 2 bits define the commands
*/
typedef enum {
- NoOp_Reg = (0x0<<6), // No Operation
-//tbd PwrDwn_Reg = (0x2<<6), // Power Down
- WrtThru_Reg = (0x1<<6) // Write Through
+ PwrDwn_Reg = (0x2<<6), // Power Down
+ WrtThru_Reg = (0x1<<6) // Write Through
} setting_t;
/**
@@ -86,12 +113,11 @@
* @details 2 bits are used to define the power down modes
*/
typedef enum {
- PwrDwnNormalOp = 0x0<<2, // DAC powers up and returns to its previous code setting.
- PwrDwnHiZ = 0x1<<2, // DAC powers down; OUT is high impedance.
- PwrDwn100K = 0x2<<2, // DAC powers down; OUT connects to ground through an internal 100k resistor.
- PwrDwn10K = 0x3<<2 // DAC powers down; OUT connects to ground through an internal 1k resistor.
+ PwrDwnNormalOp = (0x00), // DAC powers up and returns to its previous code setting.
+ PwrDwnHiZ = (0x01), // DAC powers down; OUT is high impedance.
+ PwrDwn100K = (0x02), // DAC powers down; OUT connects to ground through an internal 100k resistor.
+ PwrDwn1K = (0x03) // DAC powers down; OUT connects to ground through an internal 1k resistor.
} pwrDwnMode_t;
-
/**********************************************************//**
* @brief Constructor for MAX5216 Class.
*
@@ -111,13 +137,12 @@
/**
* @brief Send write command
- * @param setting - Command sent to MAX5216 register
- * @param value - 14 or 16 bit Value to write
+ * @param setting - WrtThru_Reg or Power Down Mode command
+ * @param value - 14 or 16 bit Value to write if WrtThru_Reg commanded
+ * Power Down Mode if PwrDwn_Reg commanded
* @return void
*/
- void writeCommand(MAX5216::setting_t setting, uint32_t value);
-
-// void writeCommand(setting_t setting, pwrDwnMode_t mode);
+ void writeCommand(MAX5216::setting_t setting, uint32_t value, pwrDwnMode_t mode = PwrDwnNormalOp);
/************************************************************
* @brief Default destructor for MAX5216 Class.