en 129 / IRRcevPulseWidth

赤外線リモコンの受信をパルス幅にて行います。 Displays the pulse width of the IR control.

Dependents:   IRLED_SendReceveDemo IRreceiver_PulseWidth

IRRcevPulseWidth.cpp@3:b2a1f396ee27, 2017-02-16 (annotated)

Committer:
nameless129
Date:
Thu Feb 16 02:07:26 2017 +0000
Revision:
3:b2a1f396ee27
Parent:
2:674f9ea95a5a 
input Pin:enable pullup

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nameless129 0:612202986301 1 #include "mbed.h"
nameless129 0:612202986301 2 #include "IRRcevPulseWidth.h"
nameless129 0:612202986301 3
nameless129 0:612202986301 4 IRRcevPulseWidth::IRRcevPulseWidth(PinName InputPin) : _inputPin(InputPin)
nameless129 0:612202986301 5 {
nameless129 0:612202986301 6 fRcevStart = 0;
nameless129 0:612202986301 7 cIRRcev = 0;
nameless129 0:612202986301 8 cIRRceved = 0;
nameless129 0:612202986301 9 IRRcevState_prev = 1;
nameless129 2:674f9ea95a5a 10 filterN = 0;
nameless129 3:b2a1f396ee27 11 _inputPin.mode(PullUp);
nameless129 0:612202986301 12 }
nameless129 0:612202986301 13
nameless129 0:612202986301 14 void IRRcevPulseWidth::init(uint16_t *dataPtr,uint16_t dataLim,uint32_t timeout_us)
nameless129 0:612202986301 15 {
nameless129 0:612202986301 16 IRRcevTimeOut = timeout_us;
nameless129 0:612202986301 17 limitUpper_dataN = dataLim;
nameless129 0:612202986301 18 p_data = dataPtr;
nameless129 0:612202986301 19 _timer.start();
nameless129 0:612202986301 20 IRRcevMicroSec_prev = _timer.read_us();
nameless129 0:612202986301 21 }
nameless129 2:674f9ea95a5a 22
nameless129 2:674f9ea95a5a 23 void IRRcevPulseWidth::setPulseNumFilter(uint16_t n)
nameless129 2:674f9ea95a5a 24 {
nameless129 2:674f9ea95a5a 25 filterN = n;
nameless129 2:674f9ea95a5a 26 }
nameless129 2:674f9ea95a5a 27
nameless129 0:612202986301 28 uint16_t IRRcevPulseWidth::getData_N(void)
nameless129 0:612202986301 29 {
nameless129 0:612202986301 30 return cIRRceved;
nameless129 0:612202986301 31 }
nameless129 0:612202986301 32
nameless129 0:612202986301 33 int8_t IRRcevPulseWidth::status(void)
nameless129 0:612202986301 34 {
nameless129 0:612202986301 35 int8_t ret=0;
nameless129 0:612202986301 36 IRRcevMicroSec = _timer.read_us();
nameless129 0:612202986301 37 IRRcevMicroSec_diff = IRRcevMicroSec - IRRcevMicroSec_prev;
nameless129 0:612202986301 38
nameless129 0:612202986301 39 IRRcevState = _inputPin;
nameless129 0:612202986301 40 if( IRRcevState != IRRcevState_prev )
nameless129 0:612202986301 41 {
nameless129 0:612202986301 42 if(fRcevStart == 0)
nameless129 0:612202986301 43 {
nameless129 0:612202986301 44 fRcevStart = 1;
nameless129 0:612202986301 45 }
nameless129 0:612202986301 46 else
nameless129 0:612202986301 47 {
nameless129 0:612202986301 48 *(p_data+cIRRcev) = IRRcevMicroSec_diff;
nameless129 0:612202986301 49 cIRRcev++;
nameless129 0:612202986301 50 if(cIRRcev >= limitUpper_dataN)
nameless129 0:612202986301 51 {
nameless129 0:612202986301 52 cIRRcev = 0;
nameless129 0:612202986301 53 ret = -1;
nameless129 0:612202986301 54 }
nameless129 0:612202986301 55 }
nameless129 0:612202986301 56 IRRcevState_prev = IRRcevState;
nameless129 0:612202986301 57 IRRcevMicroSec_prev = IRRcevMicroSec;
nameless129 0:612202986301 58 }
nameless129 0:612202986301 59 else if( (IRRcevMicroSec_diff >= IRRcevTimeOut) && (cIRRcev != 0) )
nameless129 0:612202986301 60 {
nameless129 0:612202986301 61 #if IR_RCEV_DEBUGOUT_ENABLE
nameless129 0:612202986301 62 DBG("Rceved\r\n");
nameless129 0:612202986301 63 DBG("RcevCnt:%d\r\n",cIRRcev);
nameless129 0:612202986301 64 for(i=0;i<cIRRcev;i++)
nameless129 0:612202986301 65 {
nameless129 0:612202986301 66 DBG("%d,",*(p_data+i));
nameless129 0:612202986301 67 }
nameless129 0:612202986301 68 DBG("\r\n");
nameless129 0:612202986301 69 #endif
nameless129 2:674f9ea95a5a 70 if(cIRRcev >= filterN)
nameless129 2:674f9ea95a5a 71 {
nameless129 2:674f9ea95a5a 72 cIRRceved = cIRRcev;
nameless129 2:674f9ea95a5a 73 cIRRcev = 0;
nameless129 2:674f9ea95a5a 74 fRcevStart = 0;
nameless129 2:674f9ea95a5a 75 ret = 1;
nameless129 2:674f9ea95a5a 76 }
nameless129 2:674f9ea95a5a 77 else
nameless129 2:674f9ea95a5a 78 {
nameless129 2:674f9ea95a5a 79 cIRRcev = 0;
nameless129 2:674f9ea95a5a 80 fRcevStart = 0;
nameless129 2:674f9ea95a5a 81 ret = 0;
nameless129 2:674f9ea95a5a 82 }
nameless129 0:612202986301 83 }
nameless129 0:612202986301 84 return ret;
nameless129 0:612202986301 85 }