diff options
| -rw-r--r-- | include/driver/ds2482.h | 26 | ||||
| -rw-r--r-- | src/app/datalogger/main.cc | 21 | ||||
| -rw-r--r-- | src/driver/Kconfig | 4 | ||||
| -rw-r--r-- | src/driver/ds2482.cc | 58 |
4 files changed, 109 insertions, 0 deletions
diff --git a/include/driver/ds2482.h b/include/driver/ds2482.h new file mode 100644 index 0000000..cb0b577 --- /dev/null +++ b/include/driver/ds2482.h @@ -0,0 +1,26 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + * + * DS2482-100 Single-Channel 1-Wire Master + */ +#pragma once + +class DS2482 { + private: + DS2482(const DS2482 ©); + unsigned char const address; + unsigned char txbuf[2]; + unsigned char rxbuf[1]; + + public: + DS2482(unsigned char const addr) : address(addr) {} + + void setup(); + void busReset(); + unsigned char status(); + void readROM(unsigned char *data, unsigned char len); +}; + +extern DS2482 ds2482; diff --git a/src/app/datalogger/main.cc b/src/app/datalogger/main.cc index 2444c14..f9484b5 100644 --- a/src/app/datalogger/main.cc +++ b/src/app/datalogger/main.cc @@ -33,6 +33,9 @@ #ifdef CONFIG_driver_ccs811 #include "driver/ccs811.h" #endif +#ifdef CONFIG_driver_ds2482 +#include "driver/ds2482.h" +#endif #ifdef CONFIG_driver_max44009 #include "driver/max44009.h" #endif @@ -103,6 +106,20 @@ void loop(void) kout << "CCS811 tVOC / eCO₂ : " << ccs811.tvoc << " ppb / " << ccs811.eco2 << " ppm" << endl; #endif +#ifdef CONFIG_driver_ds2482 + unsigned char addr[8]; + ds2482.readROM(addr, 8); + kout << hex << "DS2482 ROM address: "; + for (unsigned char i = 0; i < 8; i++) { + kout << (unsigned int)addr[i]; + } + kout << " / "; + for (signed char i = 7; i >= 0; i--) { + kout << (unsigned int)addr[i]; + } + kout << endl; +#endif + #ifdef CONFIG_driver_hdc1080 /* hdc1080.heater(1); @@ -223,6 +240,10 @@ int main(void) arch.delay_ms(50); #endif +#ifdef CONFIG_driver_ds2482 + ds2482.setup(); +#endif + #ifdef CONFIG_driver_hdc1080 hdc1080.init(); if (hdc1080.getManufacturerID() != 0x5449) { diff --git a/src/driver/Kconfig b/src/driver/Kconfig index b2d57e9..dbcf9dd 100644 --- a/src/driver/Kconfig +++ b/src/driver/Kconfig @@ -37,6 +37,10 @@ depends on meta_driver_i2c && !driver_bme280 && (arch_arduino_nano || arch_msp43 # ccs811 is broken and incomplete +config driver_ds2482 +bool "DS2482-100 Single-Channel 1-Wire Master" +depends on meta_driver_i2c + # dummy is AEMR-specific and not included in Kconfig config driver_eeprom24lc64 diff --git a/src/driver/ds2482.cc b/src/driver/ds2482.cc new file mode 100644 index 0000000..92bd9dd --- /dev/null +++ b/src/driver/ds2482.cc @@ -0,0 +1,58 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + * + * DS2482-100 Single-Channel 1-Wire Master + */ +#include "driver/ds2482.h" +#if defined(MULTIPASS_ARCH_HAS_I2C) && !defined(CONFIG_driver_softi2c) +#include "driver/i2c.h" +#else +#include "driver/soft_i2c.h" +#endif +#include "arch.h" + +void DS2482::setup() +{ + txbuf[0] = 0xf0; + i2c.xmit(address, 1, txbuf, 0, rxbuf); + txbuf[0] = 0xd2; + txbuf[1] = 0xf0; // default setting: passive pull-up, standard speed + i2c.xmit(address, 2, txbuf, 0, rxbuf); +} + +void DS2482::busReset() +{ + txbuf[0] = 0xb4; + i2c.xmit(address, 1, txbuf, 0, rxbuf); +} + +unsigned char DS2482::status() +{ + txbuf[0] = 0xe1; + txbuf[0] = 0xf0; + i2c.xmit(address, 2, txbuf, 1, rxbuf); + return rxbuf[0]; +} + +void DS2482::readROM(unsigned char *data, unsigned char len) +{ + busReset(); + arch.delay_ms(2); // reset low time (630us) + reset high time (614us) + txbuf[0] = 0xa5; + txbuf[1] = 0x33; + i2c.xmit(address, 2, txbuf, 0, rxbuf); + arch.delay_us(800); + for (unsigned char i = 0; i < len; i++) { + txbuf[0] = 0x96; + i2c.xmit(address, 1, txbuf, 0, rxbuf); + arch.delay_us(800); + txbuf[0] = 0xe1; + txbuf[1] = 0xe1; + i2c.xmit(address, 2, txbuf, 1, rxbuf); + data[i] = rxbuf[0]; + } +} + +DS2482 ds2482(0x18); |