From 8839bc9dca03c15f24fccc1abc774cc7dcc98d8a Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Sun, 7 Apr 2013 15:13:30 +0200 Subject: digital/io-hub/src/apbirthday: add I2C potentiometer control --- digital/io-hub/src/common-cc/potentiometer.cc | 51 +++++++++++++++++++++++++++ digital/io-hub/src/common-cc/potentiometer.hh | 42 ++++++++++++++++++++++ 2 files changed, 93 insertions(+) create mode 100644 digital/io-hub/src/common-cc/potentiometer.cc create mode 100644 digital/io-hub/src/common-cc/potentiometer.hh (limited to 'digital/io-hub/src/common-cc') diff --git a/digital/io-hub/src/common-cc/potentiometer.cc b/digital/io-hub/src/common-cc/potentiometer.cc new file mode 100644 index 00000000..a5a519bb --- /dev/null +++ b/digital/io-hub/src/common-cc/potentiometer.cc @@ -0,0 +1,51 @@ +// io-hub - Modular Input/Output. {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} +#include "potentiometer.hh" + +Potentiometer::Potentiometer (I2cQueue &queue, int a2a1a0) + : I2cQueue::Slave (queue, 0x50 | (a2a1a0 << 1), 0) +{ +} + +void +Potentiometer::recv_status (const uint8_t *status) +{ +} + +void +Potentiometer::send_command (int mem_addr, int data) +{ + uint8_t buf[] = { + (uint8_t) ((mem_addr << 4) | ((data >> 8) & 1)), + (uint8_t) (data & 0xff), + }; + send (buf, sizeof (buf), I2cQueue::RAW); +} + +void +Potentiometer::set_wiper (int index, int data, bool eeprom) +{ + send_command (index + (eeprom ? 2 : 0), data); +} + diff --git a/digital/io-hub/src/common-cc/potentiometer.hh b/digital/io-hub/src/common-cc/potentiometer.hh new file mode 100644 index 00000000..a7204af8 --- /dev/null +++ b/digital/io-hub/src/common-cc/potentiometer.hh @@ -0,0 +1,42 @@ +#ifndef potentiometer_hh +#define potentiometer_hh +// io-hub - Modular Input/Output. {{{ +// +// Copyright (C) 2013 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation; either version 2 of the License, or +// (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} +#include "i2c_queue.hh" + +/// I2C potentiometer, MCP4661. +class Potentiometer : public I2cQueue::Slave +{ + public: + /// Constructor with address variable part. + Potentiometer (I2cQueue &queue, int a2a1a0); + /// See I2cQueue::Slave::recv_status. + void recv_status (const uint8_t *status); + /// Send a low level command. + void send_command (int mem_addr, int data); + /// Set wiper to specified level. + void set_wiper (int index, int data, bool eeprom = false); +}; + +#endif // potentiometer_hh -- cgit v1.2.3