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Example host software code for the Maxim Integrated MAX5216/MAX5214 16-bit/14-bit SPI bus DAC. Hosted on the MAX32630FTHR FeatherWing micro-controller board.
Dependencies: MAX5216_16_Bit_DAC_SPI_Bus_Driver USBDevice max32630fthr
main.cpp@1:fe0cd2999f95, 2018-08-13 (annotated)
- Committer:
- phonemacro
- Date:
- Mon Aug 13 04:18:41 2018 +0000
- Revision:
- 1:fe0cd2999f95
- Parent:
- 0:64aee6498091
- Child:
- 2:5f8cd1facd15
v1.0000.1, Add Power Down command. Remove NOP command. Increase SPI bus baud rate to 24 MHz.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
phonemacro | 0:64aee6498091 | 1 | /******************************************************************************* |
phonemacro | 0:64aee6498091 | 2 | * Copyright (C) 2018 Maxim Integrated Products, Inc., All Rights Reserved. |
phonemacro | 0:64aee6498091 | 3 | * |
phonemacro | 0:64aee6498091 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
phonemacro | 0:64aee6498091 | 5 | * copy of this software and associated documentation files (the "Software"), |
phonemacro | 0:64aee6498091 | 6 | * to deal in the Software without restriction, including without limitation |
phonemacro | 0:64aee6498091 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
phonemacro | 0:64aee6498091 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
phonemacro | 0:64aee6498091 | 9 | * Software is furnished to do so, subject to the following conditions: |
phonemacro | 0:64aee6498091 | 10 | * |
phonemacro | 0:64aee6498091 | 11 | * The above copyright notice and this permission notice shall be included |
phonemacro | 0:64aee6498091 | 12 | * in all copies or substantial portions of the Software. |
phonemacro | 0:64aee6498091 | 13 | * |
phonemacro | 0:64aee6498091 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
phonemacro | 0:64aee6498091 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
phonemacro | 0:64aee6498091 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
phonemacro | 0:64aee6498091 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
phonemacro | 0:64aee6498091 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
phonemacro | 0:64aee6498091 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
phonemacro | 0:64aee6498091 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
phonemacro | 0:64aee6498091 | 21 | * |
phonemacro | 0:64aee6498091 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
phonemacro | 0:64aee6498091 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
phonemacro | 0:64aee6498091 | 24 | * Products, Inc. Branding Policy. |
phonemacro | 0:64aee6498091 | 25 | * |
phonemacro | 0:64aee6498091 | 26 | * The mere transfer of this software does not imply any licenses |
phonemacro | 0:64aee6498091 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
phonemacro | 0:64aee6498091 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
phonemacro | 0:64aee6498091 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
phonemacro | 0:64aee6498091 | 30 | * ownership rights. |
phonemacro | 0:64aee6498091 | 31 | ******************************************************************************* |
phonemacro | 0:64aee6498091 | 32 | */ |
phonemacro | 0:64aee6498091 | 33 | #include "mbed.h" |
phonemacro | 0:64aee6498091 | 34 | #include "max32630fthr.h" |
phonemacro | 0:64aee6498091 | 35 | #include "MAX5216.h" |
phonemacro | 0:64aee6498091 | 36 | #include "USBSerial.h" |
phonemacro | 0:64aee6498091 | 37 | |
phonemacro | 0:64aee6498091 | 38 | MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3); |
phonemacro | 0:64aee6498091 | 39 | |
phonemacro | 0:64aee6498091 | 40 | DigitalOut rLED(LED1); |
phonemacro | 0:64aee6498091 | 41 | DigitalOut gLED(LED2); |
phonemacro | 0:64aee6498091 | 42 | DigitalOut bLED(LED3); |
phonemacro | 0:64aee6498091 | 43 | |
phonemacro | 0:64aee6498091 | 44 | DigitalOut selectPin(P3_0); // Pin 3_0 is used to drive chip enable low |
phonemacro | 0:64aee6498091 | 45 | SPI spi(P5_1, P5_2, P5_0); // mosi, miso, sclk |
phonemacro | 0:64aee6498091 | 46 | |
phonemacro | 0:64aee6498091 | 47 | // main() runs in its own thread in the OS |
phonemacro | 0:64aee6498091 | 48 | // (note the calls to Thread::wait below for delays) |
phonemacro | 0:64aee6498091 | 49 | /** |
phonemacro | 0:64aee6498091 | 50 | * @brief Sample main program for MAX5214, MAX5216 |
phonemacro | 1:fe0cd2999f95 | 51 | * @version 1.0000.1 |
phonemacro | 0:64aee6498091 | 52 | * |
phonemacro | 0:64aee6498091 | 53 | * @details Sample main program for MAX30101. |
phonemacro | 0:64aee6498091 | 54 | * The prints are sent to the terminal window (9600, 8n1). |
phonemacro | 1:fe0cd2999f95 | 55 | * The program sets the GPIOs to 3.3V and the program |
phonemacro | 1:fe0cd2999f95 | 56 | * issues various voltages to the DAC. Then the program |
phonemacro | 1:fe0cd2999f95 | 57 | * issues a Power Down Command. |
phonemacro | 0:64aee6498091 | 58 | * To run the program, drag and drop the .bin file into the |
phonemacro | 0:64aee6498091 | 59 | * DAPLINK folder. After it finishes flashing, cycle the power or |
phonemacro | 1:fe0cd2999f95 | 60 | * reset the Pegasus (MAX32630FTHR) after flashing by pressing the button on |
phonemacro | 0:64aee6498091 | 61 | * the Pegasus next to the battery connector or the button |
phonemacro | 0:64aee6498091 | 62 | * on the MAXREFDES100HDK. |
phonemacro | 0:64aee6498091 | 63 | */ |
phonemacro | 0:64aee6498091 | 64 | int main() |
phonemacro | 0:64aee6498091 | 65 | { |
phonemacro | 0:64aee6498091 | 66 | DigitalOut rLED(LED1, LED_OFF); |
phonemacro | 0:64aee6498091 | 67 | DigitalOut gLED(LED2, LED_OFF); |
phonemacro | 0:64aee6498091 | 68 | DigitalOut bLED(LED3, LED_OFF); |
phonemacro | 0:64aee6498091 | 69 | gLED = LED_ON; |
phonemacro | 0:64aee6498091 | 70 | printf("MAX5216 16-bit DAC example source code.\r\n"); |
phonemacro | 0:64aee6498091 | 71 | MAX5216 dac(spi, selectPin, MAX5216::MAX5216_IC); |
phonemacro | 0:64aee6498091 | 72 | |
phonemacro | 0:64aee6498091 | 73 | spi.format(8,0); |
phonemacro | 1:fe0cd2999f95 | 74 | spi.frequency(24000000); // Use 24 MHz SPI bus |
phonemacro | 0:64aee6498091 | 75 | |
phonemacro | 1:fe0cd2999f95 | 76 | // Command values to the DAC |
phonemacro | 0:64aee6498091 | 77 | dac.writeCommand(MAX5216::WrtThru_Reg, 0xFFFF); |
phonemacro | 0:64aee6498091 | 78 | wait(1.0); |
phonemacro | 0:64aee6498091 | 79 | gLED = LED_OFF; |
phonemacro | 0:64aee6498091 | 80 | dac.writeCommand(MAX5216::WrtThru_Reg, 0x7FFF); |
phonemacro | 0:64aee6498091 | 81 | wait(1.0); |
phonemacro | 0:64aee6498091 | 82 | gLED = LED_ON; |
phonemacro | 0:64aee6498091 | 83 | dac.writeCommand(MAX5216::WrtThru_Reg, 0x3FFF); |
phonemacro | 0:64aee6498091 | 84 | wait(1.0); |
phonemacro | 0:64aee6498091 | 85 | gLED = LED_OFF; |
phonemacro | 0:64aee6498091 | 86 | dac.writeCommand(MAX5216::WrtThru_Reg, 0x1FFF); |
phonemacro | 0:64aee6498091 | 87 | wait(1.0); |
phonemacro | 1:fe0cd2999f95 | 88 | rLED = LED_ON; |
phonemacro | 1:fe0cd2999f95 | 89 | gLED = LED_ON; |
phonemacro | 1:fe0cd2999f95 | 90 | |
phonemacro | 1:fe0cd2999f95 | 91 | // Issue Power Down Commands |
phonemacro | 1:fe0cd2999f95 | 92 | // dac.writeCommand(MAX5216::PwrDwn_Reg, MAX5216::PwrDwnNormalOp); |
phonemacro | 1:fe0cd2999f95 | 93 | dac.writeCommand(MAX5216::PwrDwn_Reg, MAX5216::PwrDwnHiZ); |
phonemacro | 1:fe0cd2999f95 | 94 | // dac.writeCommand(MAX5216::PwrDwn_Reg, MAX5216::PwrDwn100K); |
phonemacro | 1:fe0cd2999f95 | 95 | // dac.writeCommand(MAX5216::PwrDwn_Reg, MAX5216::PwrDwn1K); |
phonemacro | 0:64aee6498091 | 96 | wait(2.0); |
phonemacro | 1:fe0cd2999f95 | 97 | rLED = LED_OFF; |
phonemacro | 0:64aee6498091 | 98 | |
phonemacro | 0:64aee6498091 | 99 | while (true) { // Blink the green LED |
phonemacro | 0:64aee6498091 | 100 | gLED = !gLED; |
phonemacro | 0:64aee6498091 | 101 | wait(0.5); |
phonemacro | 0:64aee6498091 | 102 | } |
phonemacro | 0:64aee6498091 | 103 | } |