Driver, C++ code, and library for the MAX5487, MAX5488, MAX5489. dual channel, SPI bus, 256-tap digital potentiometer. Non-volatile memory (EEPROM) is available for returning the wipers to their previously stored positions upon power-up.
Dependents: MAX5487_Digital_Potentiometer_Resistor_MAX32630FTHR_Host
MAX5487.cpp@3:4d4053c4c29e, 2018-07-15 (annotated)
- Committer:
- jungkeviny
- Date:
- Sun Jul 15 03:49:41 2018 +0000
- Revision:
- 3:4d4053c4c29e
- Parent:
- 1:bc368afe2ec8
Updated docs
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jungkeviny | 1:bc368afe2ec8 | 1 | #include "MAX5487.h" |
jungkeviny | 1:bc368afe2ec8 | 2 | |
jungkeviny | 1:bc368afe2ec8 | 3 | MAX5487::MAX5487(SPI &spi, DigitalOut &pin) : m_spi(spi), m_pin(pin) |
jungkeviny | 1:bc368afe2ec8 | 4 | { |
jungkeviny | 1:bc368afe2ec8 | 5 | m_pin = 1; |
jungkeviny | 1:bc368afe2ec8 | 6 | } |
jungkeviny | 1:bc368afe2ec8 | 7 | |
jungkeviny | 1:bc368afe2ec8 | 8 | |
jungkeviny | 1:bc368afe2ec8 | 9 | void MAX5487::writeCommand(MAX5487::setting_t setting, int value) |
jungkeviny | 1:bc368afe2ec8 | 10 | { |
jungkeviny | 1:bc368afe2ec8 | 11 | if((value >> 8) > 0) { |
jungkeviny | 1:bc368afe2ec8 | 12 | printf("value in writeCommand > 8 bits!\r\n"); |
jungkeviny | 1:bc368afe2ec8 | 13 | return; |
jungkeviny | 1:bc368afe2ec8 | 14 | } |
jungkeviny | 1:bc368afe2ec8 | 15 | m_pin = 0; |
jungkeviny | 1:bc368afe2ec8 | 16 | m_spi.write(setting); |
jungkeviny | 1:bc368afe2ec8 | 17 | m_spi.write(value); |
jungkeviny | 1:bc368afe2ec8 | 18 | m_pin = 1; |
jungkeviny | 1:bc368afe2ec8 | 19 | } |
jungkeviny | 1:bc368afe2ec8 | 20 | |
jungkeviny | 1:bc368afe2ec8 | 21 | |
jungkeviny | 1:bc368afe2ec8 | 22 | void MAX5487::writeCommand(MAX5487::setting_t setting) |
jungkeviny | 1:bc368afe2ec8 | 23 | { |
jungkeviny | 1:bc368afe2ec8 | 24 | m_pin = 0; |
jungkeviny | 1:bc368afe2ec8 | 25 | m_spi.write(setting); |
jungkeviny | 1:bc368afe2ec8 | 26 | m_pin = 1; |
jungkeviny | 1:bc368afe2ec8 | 27 | } |
jungkeviny | 1:bc368afe2ec8 | 28 |