Ian McCulloch / nRF24L01

nRF24L01 driver

Dependents:   Nucleo_IOT1 wireless

nRF24L01P_PRX.cpp@6:952996e3abdb, 2016-09-14 (annotated)

Committer:
ianmcc
Date:
Wed Sep 14 14:43:13 2016 +0000
Revision:
6:952996e3abdb
Parent:
0:7313e63394c3 
bug fixes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ianmcc 0:7313e63394c3 1
ianmcc 0:7313e63394c3 2 #include "nRF24L01P_PRX.h"
ianmcc 0:7313e63394c3 3
ianmcc 0:7313e63394c3 4 // status
ianmcc 0:7313e63394c3 5 #define STATUS_UNDEFINED 0
ianmcc 0:7313e63394c3 6 #define STATUS_READY_INIT 1
ianmcc 0:7313e63394c3 7 #define STATUS_POWER_DOWN 2
ianmcc 0:7313e63394c3 8 #define STATUS_STARTUP_STANDBY 3
ianmcc 0:7313e63394c3 9 #define STATUS_STANDBY 4
ianmcc 0:7313e63394c3 10 #define STATUS_RECEIVE 5
ianmcc 0:7313e63394c3 11
ianmcc 0:7313e63394c3 12 nRF24L01P_PRX::nRF24L01P_PRX(nRF24L01P& Device_, PinName CE_, PinName Int_)
ianmcc 0:7313e63394c3 13 : Device(Device_),
ianmcc 0:7313e63394c3 14 CE(CE_),
ianmcc 0:7313e63394c3 15 Int(Int_)
ianmcc 0:7313e63394c3 16 {
ianmcc 0:7313e63394c3 17 CE = 0;
ianmcc 0:7313e63394c3 18 PayloadSize = 0;
ianmcc 0:7313e63394c3 19 Status = STATUS_UNDEFINED;
ianmcc 0:7313e63394c3 20 Int.mode(PullNone);
ianmcc 0:7313e63394c3 21 Int.fall(NULL);
ianmcc 0:7313e63394c3 22 InitializeTimer.attach_us(this, &nRF24L01P_PRX::ReadyInitialize, Tundef2pd_us);
ianmcc 0:7313e63394c3 23 }
ianmcc 0:7313e63394c3 24
ianmcc 0:7313e63394c3 25 void
ianmcc 0:7313e63394c3 26 nRF24L01P_PRX::Initialize()
ianmcc 0:7313e63394c3 27 {
ianmcc 0:7313e63394c3 28 while (Status == STATUS_UNDEFINED)
ianmcc 0:7313e63394c3 29 {
ianmcc 0:7313e63394c3 30 wait_us(1);
ianmcc 0:7313e63394c3 31 }
ianmcc 0:7313e63394c3 32 PowerOnTimer.detach();
ianmcc 0:7313e63394c3 33 CE = 0;
ianmcc 0:7313e63394c3 34 Device.reset();
ianmcc 0:7313e63394c3 35 Device.set_prx_mode();
ianmcc 0:7313e63394c3 36 Status = STATUS_POWER_DOWN;
ianmcc 0:7313e63394c3 37 PayloadSize = 0;
ianmcc 0:7313e63394c3 38 Int.fall(this, &nRF24L01P_PRX::IntHandler);
ianmcc 0:7313e63394c3 39 }
ianmcc 0:7313e63394c3 40
ianmcc 0:7313e63394c3 41 void
ianmcc 0:7313e63394c3 42 nRF24L01P_PRX::SetChannel(int Channel)
ianmcc 0:7313e63394c3 43 {
ianmcc 0:7313e63394c3 44 Device.set_channel(Channel);
ianmcc 0:7313e63394c3 45 }
ianmcc 0:7313e63394c3 46
ianmcc 0:7313e63394c3 47 void
ianmcc 0:7313e63394c3 48 nRF24L01P_PRX::SetDataRate(int Rate)
ianmcc 0:7313e63394c3 49 {
ianmcc 0:7313e63394c3 50 Device.set_air_data_rate(Rate);
ianmcc 0:7313e63394c3 51 }
ianmcc 0:7313e63394c3 52
ianmcc 0:7313e63394c3 53 void
ianmcc 0:7313e63394c3 54 nRF24L01P_PRX::SetAddress(uint64_t Address)
ianmcc 0:7313e63394c3 55 {
ianmcc 0:7313e63394c3 56 Device.set_rx_address(0, Address);
ianmcc 0:7313e63394c3 57 }
ianmcc 0:7313e63394c3 58
ianmcc 0:7313e63394c3 59 void
ianmcc 0:7313e63394c3 60 nRF24L01P_PRX::SetPayloadSize(int Size)
ianmcc 0:7313e63394c3 61 {
ianmcc 0:7313e63394c3 62 PayloadSize = Size;
ianmcc 0:7313e63394c3 63 Device.set_rx_payload_bytes(0, Size);
ianmcc 0:7313e63394c3 64 }
ianmcc 0:7313e63394c3 65
ianmcc 0:7313e63394c3 66 void
ianmcc 0:7313e63394c3 67 nRF24L01P_PRX::PowerUp()
ianmcc 0:7313e63394c3 68 {
ianmcc 0:7313e63394c3 69 if (Status != STATUS_POWER_DOWN)
ianmcc 0:7313e63394c3 70 {
ianmcc 0:7313e63394c3 71 error("nRF24L01P_PRX::PowerUp(): can only be called when device is powered down");
ianmcc 0:7313e63394c3 72 }
ianmcc 0:7313e63394c3 73 Status = STATUS_STARTUP_STANDBY;
ianmcc 0:7313e63394c3 74 Device.set_power_up();
ianmcc 0:7313e63394c3 75 PowerOnTimer.attach_us(this, &nRF24L01P_PRX::ReadyStandby, Tpd2stby_us);
ianmcc 0:7313e63394c3 76 }
ianmcc 0:7313e63394c3 77
ianmcc 0:7313e63394c3 78 void
ianmcc 0:7313e63394c3 79 nRF24L01P_PRX::PowerDown()
ianmcc 0:7313e63394c3 80 {
ianmcc 0:7313e63394c3 81 if (Status == STATUS_UNDEFINED || Status == STATUS_READY_INIT || Status == STATUS_POWER_DOWN)
ianmcc 0:7313e63394c3 82 {
ianmcc 0:7313e63394c3 83 error("nRF24L01P_PRX::PowerDown(): error: device is not powered up!");
ianmcc 0:7313e63394c3 84 }
ianmcc 0:7313e63394c3 85 PowerOnTimer.detach();
ianmcc 0:7313e63394c3 86 Device.set_power_down();
ianmcc 0:7313e63394c3 87 Status = STATUS_POWER_DOWN;
ianmcc 0:7313e63394c3 88 }
ianmcc 0:7313e63394c3 89
ianmcc 0:7313e63394c3 90 void
ianmcc 0:7313e63394c3 91 nRF24L01P_PRX::StartReceive()
ianmcc 0:7313e63394c3 92 {
ianmcc 0:7313e63394c3 93 if (Status == STATUS_UNDEFINED || Status == STATUS_READY_INIT || Status == STATUS_POWER_DOWN)
ianmcc 0:7313e63394c3 94 {
ianmcc 0:7313e63394c3 95 error("nRF24L01P_PRX::StartReceive(): error: device is not powered up!");
ianmcc 0:7313e63394c3 96 }
ianmcc 0:7313e63394c3 97 while (Status == STATUS_STARTUP_STANDBY)
ianmcc 0:7313e63394c3 98 {
ianmcc 0:7313e63394c3 99 wait_us(1);
ianmcc 0:7313e63394c3 100 }
ianmcc 0:7313e63394c3 101 CE = 1;
ianmcc 0:7313e63394c3 102 Status = STATUS_RECEIVE;
ianmcc 0:7313e63394c3 103 }
ianmcc 0:7313e63394c3 104
ianmcc 0:7313e63394c3 105 void
ianmcc 0:7313e63394c3 106 nRF24L01P_PRX::StopReceive()
ianmcc 0:7313e63394c3 107 {
ianmcc 0:7313e63394c3 108 if (Status != STATUS_RECEIVE)
ianmcc 0:7313e63394c3 109 {
ianmcc 0:7313e63394c3 110 error("nRF24L01P_PRX::StopReceive(): error: device is not receiving!");
ianmcc 0:7313e63394c3 111 }
ianmcc 0:7313e63394c3 112 CE = 0;
ianmcc 0:7313e63394c3 113 Status = STATUS_STANDBY;
ianmcc 0:7313e63394c3 114 }
ianmcc 0:7313e63394c3 115
ianmcc 0:7313e63394c3 116 bool
ianmcc 0:7313e63394c3 117 nRF24L01P_PRX::IsPacketReady()
ianmcc 0:7313e63394c3 118 {
ianmcc 0:7313e63394c3 119 return Device.is_rx_ready();
ianmcc 0:7313e63394c3 120 }
ianmcc 0:7313e63394c3 121
ianmcc 0:7313e63394c3 122 int
ianmcc 0:7313e63394c3 123 nRF24L01P_PRX::ReadPacket(char* Buf)
ianmcc 0:7313e63394c3 124 {
ianmcc 0:7313e63394c3 125 if (!this->IsPacketReady())
ianmcc 0:7313e63394c3 126 {
ianmcc 0:7313e63394c3 127 error("nRF24L01P_PRX::ReadPacket(): error: no packet to read!");
ianmcc 0:7313e63394c3 128 }
ianmcc 0:7313e63394c3 129
ianmcc 0:7313e63394c3 130 Device.read_rx_payload(Buf);
ianmcc 0:7313e63394c3 131 Device.clear_rx_ready();
ianmcc 0:7313e63394c3 132 return PayloadSize;
ianmcc 0:7313e63394c3 133 }
ianmcc 0:7313e63394c3 134
ianmcc 0:7313e63394c3 135 void
ianmcc 0:7313e63394c3 136 nRF24L01P_PRX::IntHandler()
ianmcc 0:7313e63394c3 137 {
ianmcc 0:7313e63394c3 138 // here we do nothing, since we use polling instead
ianmcc 0:7313e63394c3 139 /*
ianmcc 0:7313e63394c3 140 while (Device.is_rx_ready())
ianmcc 0:7313e63394c3 141 {
ianmcc 0:7313e63394c3 142 // read payload
ianmcc 0:7313e63394c3 143 Device.read_rx_payload(Buf);
ianmcc 0:7313e63394c3 144 Device.clear_rx_ready();
ianmcc 0:7313e63394c3 145 }
ianmcc 0:7313e63394c3 146 */
ianmcc 0:7313e63394c3 147 }
ianmcc 0:7313e63394c3 148
ianmcc 0:7313e63394c3 149 void
ianmcc 0:7313e63394c3 150 nRF24L01P_PRX::ReadyInitialize()
ianmcc 0:7313e63394c3 151 {
ianmcc 0:7313e63394c3 152 Status = STATUS_READY_INIT;
ianmcc 0:7313e63394c3 153 }
ianmcc 0:7313e63394c3 154
ianmcc 0:7313e63394c3 155 void
ianmcc 0:7313e63394c3 156 nRF24L01P_PRX::ReadyStandby()
ianmcc 0:7313e63394c3 157 {
ianmcc 0:7313e63394c3 158 if (Status == STATUS_STARTUP_STANDBY)
ianmcc 0:7313e63394c3 159 Status = STATUS_STANDBY;
ianmcc 0:7313e63394c3 160 }