Update to work with Grove
Dependencies: DigitDisplay RangeFinder Pulse Grove_temperature FXOS8700Q
Diff: LED_Bar.cpp
- Revision:
- 1:dddc62cabd99
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LED_Bar.cpp Wed Feb 10 22:58:39 2021 +0000 @@ -0,0 +1,93 @@ +/* +LED bar library V1.0 +2010 Copyright (c) Seeed Technology Inc. All right reserved. + +Original Author: LG + +Modify: Mihail Stoyanov (mihail.stoyanov@arm.com) for ARM mbed, 2014-07-30 +User can choose which Io to be used. +This library is free software; you can redistribute it and/or +modify it under the terms of the GNU Lesser General Public +License as published by the Free Software Foundation; either +version 2.1 of the License, or (at your option) any later version. + +This library 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 +Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include "LED_Bar.h" + +LED_Bar::LED_Bar(PinName pinClk, PinName pinDta) : __pinClk(pinClk), __pinDta(pinDta) +{ + __led_state = 0x00; +} + +void LED_Bar::latchData() +{ + __pinDta = 0; + wait_us(10); + + for(int i=0; i<4; i++) { + __pinDta = 1; + __pinDta = 0; + } + +} + +void LED_Bar::send16bitData(unsigned int data) +{ + for(int i=0; i<16; i++) { + unsigned int state = data & 0x8000 ? 1 : 0; + __pinDta = state; + + state = __pinClk ? 0 : 1; + __pinClk = state; + + data <<= 1; + } +} + +void LED_Bar::ledIndexBit(unsigned int index_bits) +{ + + send16bitData(CMDMODE); + + for (int i=0; i<12; i++) { + unsigned int state = (index_bits&0x0001) ? ON : SHUT; + send16bitData(state); + + index_bits = index_bits>>1; + } + + latchData(); +} + +void LED_Bar::setLevel(int level) +{ + + if(level>10)return; + + send16bitData(CMDMODE); + + for(int i=0; i<12; i++) { + unsigned int state1 = (i<level) ? ON : SHUT; + + send16bitData(state1); + } + + latchData(); +} + +void LED_Bar::setSingleLed(int num, int st) +{ + if(num>10)return; + __led_state = st ? (__led_state | (0x01<<num)) : (__led_state & ~(0x01<<num)); + ledIndexBit(__led_state); + +}