Stephen Dickey / C027-REVB

Fork to support REVB hardware.

Dependents:   C027_BootTest_revb C027_EthernetSniffTest C027_M3_SerialEcho C027_HelloWorld_revb ... more

Fork of C027 by u-blox

C027.cpp@16:6475e8463afc, 2013-12-13 (annotated)

Committer:
dixter1
Date:
Fri Dec 13 00:30:17 2013 +0000
Revision:
16:6475e8463afc
Parent:
15:971186932592
Child:
18:724e52d07c10
Child:
19:82c9967207f1
Update with Leakage Test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mazgch 2:b7bd3660ff64 1 /* Platform source file, for the u-blox C27-C20/U20/G35
mazgch 2:b7bd3660ff64 2 * mbed Internet of Things Starter Kit
mazgch 2:b7bd3660ff64 3 * http://mbed.org/platforms/u-blox-C027/
mazgch 2:b7bd3660ff64 4 *
mazgch 2:b7bd3660ff64 5 */
mazgch 2:b7bd3660ff64 6
mazgch 2:b7bd3660ff64 7 #include "C027.h"
mazgch 2:b7bd3660ff64 8
mazgch 2:b7bd3660ff64 9 void mbed_die(void)
mazgch 2:b7bd3660ff64 10 {
mazgch 8:a356376db984 11 DigitalOut led(LED);
mazgch 11:722101675ce4 12 led = 0;
mazgch 11:722101675ce4 13 // Send SOS in Morse Code: // "... --- ... "
mazgch 11:722101675ce4 14 const char sos[] = "=.=.=...===.===.===...=.=.=......";
mazgch 11:722101675ce4 15 const int dot = 100; // length of the dot in milliseconds (typical: 50-100 ms)
mazgch 11:722101675ce4 16 // lengths of symbols:
mazgch 11:722101675ce4 17 // di = dot
mazgch 11:722101675ce4 18 // dah = 3 dot
mazgch 11:722101675ce4 19 // char space = 3 dot
mazgch 11:722101675ce4 20 // word space = 6 dot
mazgch 11:722101675ce4 21 for (int i = 0; /* nothing */; i = sos[i+1] ? i+1 : 0)
mazgch 2:b7bd3660ff64 22 {
mazgch 11:722101675ce4 23 led = (sos[i] == '=');
mazgch 11:722101675ce4 24 wait_ms(dot);
mazgch 2:b7bd3660ff64 25 }
mazgch 2:b7bd3660ff64 26 }
mazgch 2:b7bd3660ff64 27
mazgch 6:e11bf54dd344 28 C027::C027() :
mazgch 13:fb30e9923a7b 29 mdmEn(MDMEN), mdmRst(MDMRST), mdmPwrOn(MDMPWRON), // MDM CTRL
mazgch 13:fb30e9923a7b 30 mdmLvlOe(MDMLVLOE), mdmILvlOe(MDMILVLOE), mdmUsbDet(MDMUSBDET), // MDM IF
mazgch 13:fb30e9923a7b 31 gpsEn(GPSEN), gpsRst(GPSRST) // GPS CTRL
mazgch 6:e11bf54dd344 32 {
mazgch 14:e30f90b5447e 33 DigitalOut led(LED);
mazgch 13:fb30e9923a7b 34 DigitalOut mdmRts(MDMRTS);
mazgch 14:e30f90b5447e 35 led = 0; // LED1: 0=off
mazgch 14:e30f90b5447e 36 mdmRts = 0; // RTS: 0=ready to send
mazgch 7:e3eab86f1de9 37 // we start with the gps disabled
mazgch 8:a356376db984 38 gpsEn = 0; // LDOEN: 1=on,0=off
mazgch 8:a356376db984 39 gpsRst = 0; // RESET: 0=reset,1=operating
mazgch 6:e11bf54dd344 40 gpsIsEnabled = false;
mazgch 7:e3eab86f1de9 41 // we start with the modem disabled
dixter1 16:6475e8463afc 42 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
dixter1 16:6475e8463afc 43 mdmILvlOe = 1; // ILVLEN: 0=disabled (i2c)
dixter1 15:971186932592 44 mdmUsbDet = 1; // USBDET: 0=disabled
mazgch 8:a356376db984 45 mdmPwrOn = 1; // PWRON: 1=idle, 0=action
mazgch 8:a356376db984 46 mdmEn = 0; // LDOEN: 1=on, 0=off
dixter1 15:971186932592 47 mdmRst = 1; // RESET: 0=reset, 1=operating
mazgch 6:e11bf54dd344 48 mdmIsEnabled = false;
mazgch 14:e30f90b5447e 49 mdmUseUsb = false;
mazgch 6:e11bf54dd344 50 }
mazgch 6:e11bf54dd344 51
dixter1 16:6475e8463afc 52 void C027::LeakageTest( void )
dixter1 16:6475e8463afc 53 {
dixter1 16:6475e8463afc 54 mdmEn = 0; //disable
dixter1 16:6475e8463afc 55 gpsEn = 1; //enable
dixter1 16:6475e8463afc 56 mdmLvlOe = 0; //enable
dixter1 16:6475e8463afc 57 mdmILvlOe = 1; //enable
dixter1 16:6475e8463afc 58 mdmPwrOn = 1; //hi (no meaning this context)
dixter1 16:6475e8463afc 59 }
dixter1 16:6475e8463afc 60
mazgch 6:e11bf54dd344 61 void C027::mdmPower(bool enable)
mazgch 6:e11bf54dd344 62 {
mazgch 7:e3eab86f1de9 63 if (!mdmIsEnabled && enable) // enable modem
mazgch 6:e11bf54dd344 64 {
mazgch 8:a356376db984 65 mdmEn = 1; // LDOEN: 0=off -> 1=on
dixter1 15:971186932592 66 wait_ms(50); // RST line will come up as soon as
dixter1 15:971186932592 67 mdmPwrOn = 0; // PWRON: 0=turn on -> 1=idle
mazgch 8:a356376db984 68 wait_ms(300); // power on sequence is triggered by keeping reset 50ms-300ms low
mazgch 14:e30f90b5447e 69 mdmPwrOn = 1; // PWRON: 0=turn on -> 1=idle
mazgch 7:e3eab86f1de9 70 mdmIsEnabled = true;
dixter1 16:6475e8463afc 71 wait_ms(1000);
dixter1 16:6475e8463afc 72 mdmLvlOe = 0; // LVLEN: 0=enabled;
mazgch 7:e3eab86f1de9 73 }
mazgch 7:e3eab86f1de9 74 else if (mdmIsEnabled && !enable) // disable modem
mazgch 7:e3eab86f1de9 75 {
mazgch 7:e3eab86f1de9 76 mdmIsEnabled = false;
mazgch 7:e3eab86f1de9 77 // initiate power off sequence by setting PwnOn low for >1s
mazgch 13:fb30e9923a7b 78 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 79 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
mazgch 8:a356376db984 80 mdmUsbDet = 0; // USBDET: 0=disabled
mazgch 8:a356376db984 81 mdmPwrOn = 0; // PWRON: 0=active
mazgch 8:a356376db984 82 wait_ms(1000); // send to sleep
mazgch 8:a356376db984 83 mdmPwrOn = 1; // PWRON: 0=active -> 1=idle
mazgch 7:e3eab86f1de9 84 // now we can savely switch off the ldo
mazgch 8:a356376db984 85 mdmRst = 0; // RESET: 1=operating -> 0=reset
mazgch 8:a356376db984 86 mdmEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 87 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 88 // the gps ldo may no longer be needed level shifters of the modem
mazgch 7:e3eab86f1de9 89 // so we switch it off if the gps is not enabled
mazgch 7:e3eab86f1de9 90 if (!gpsIsEnabled)
mazgch 7:e3eab86f1de9 91 gpsEn = 0; // LDOEN(gps): 1=on -> 0=off
mazgch 7:e3eab86f1de9 92 #endif
mazgch 6:e11bf54dd344 93 }
mazgch 13:fb30e9923a7b 94
mazgch 6:e11bf54dd344 95 }
mazgch 6:e11bf54dd344 96
mazgch 14:e30f90b5447e 97 void C027::mdmUsbEnable(bool enable)
mazgch 14:e30f90b5447e 98 {
mazgch 14:e30f90b5447e 99 mdmUseUsb = enable;
mazgch 14:e30f90b5447e 100 if (mdmIsEnabled)
mazgch 14:e30f90b5447e 101 mdmUsbDet = mdmUseUsb ? 1 : 0;
mazgch 14:e30f90b5447e 102 }
mazgch 14:e30f90b5447e 103
mazgch 6:e11bf54dd344 104 void C027::mdmReset(void)
mazgch 6:e11bf54dd344 105 {
mazgch 8:a356376db984 106 if (mdmIsEnabled)
mazgch 8:a356376db984 107 {
mazgch 8:a356376db984 108 mdmRst = 0; // RESET: 0=reset
mazgch 8:a356376db984 109 // power on sequence is triggered by reset low
mazgch 8:a356376db984 110 // LISA-U200 50ms
mazgch 8:a356376db984 111 // SARA-G350 50ms
mazgch 8:a356376db984 112 // LISA-C200 300ms
mazgch 8:a356376db984 113 wait_ms(300);
mazgch 8:a356376db984 114 mdmRst = 1; // RESET: 0=reset -> 1=operating
mazgch 8:a356376db984 115 }
mazgch 8:a356376db984 116 }
mazgch 8:a356376db984 117
mazgch 8:a356376db984 118 void C027::mdmWakeup(void)
mazgch 8:a356376db984 119 {
mazgch 6:e11bf54dd344 120 if (mdmIsEnabled)
mazgch 6:e11bf54dd344 121 {
mazgch 8:a356376db984 122 mdmPwrOn = 0;
mazgch 8:a356376db984 123 // wakeup the device by low pulse:
mazgch 8:a356376db984 124 // LISA-U200 50-80us
mazgch 8:a356376db984 125 // SARA-G350 5ms
mazgch 8:a356376db984 126 // LISA-C200 150ms
mazgch 8:a356376db984 127 wait_ms(150);
mazgch 8:a356376db984 128 mdmPwrOn = 1;
mazgch 6:e11bf54dd344 129 }
mazgch 8:a356376db984 130 }
mazgch 8:a356376db984 131
dixter1 15:971186932592 132 // delete this function?
dixter1 15:971186932592 133 // pwr_on signal has no function once modem is powered on.
mazgch 8:a356376db984 134 void C027::mdmSleep(void)
mazgch 8:a356376db984 135 {
mazgch 8:a356376db984 136 if (mdmIsEnabled)
mazgch 8:a356376db984 137 {
mazgch 8:a356376db984 138 mdmPwrOn = 0;
mazgch 8:a356376db984 139 // going to sleep is triggerd by low pulse:
mazgch 8:a356376db984 140 // LISA-U200 1000ms
mazgch 8:a356376db984 141 // SARA-G350 n/a
mazgch 8:a356376db984 142 // LISA-C200 n/a
mazgch 8:a356376db984 143 wait_ms(1000);
mazgch 8:a356376db984 144 mdmPwrOn = 1;
mazgch 8:a356376db984 145 }
mazgch 7:e3eab86f1de9 146 }
mazgch 7:e3eab86f1de9 147
mazgch 7:e3eab86f1de9 148 void C027::gpsPower(bool enable)
mazgch 7:e3eab86f1de9 149 {
mazgch 7:e3eab86f1de9 150 if (!gpsIsEnabled && enable) // enable gps
mazgch 7:e3eab86f1de9 151 {
mazgch 7:e3eab86f1de9 152 gpsRst = 0; // RESET: 0=reset
mazgch 7:e3eab86f1de9 153 gpsEn = 1; // LDOEN: 0=off -> 1=on
mazgch 7:e3eab86f1de9 154 wait_ms(1); // wait until stable
mazgch 7:e3eab86f1de9 155 gpsRst = 1; // RESET: 0=reset -> 1=operating
mazgch 7:e3eab86f1de9 156 gpsIsEnabled = true;
mazgch 7:e3eab86f1de9 157 // the gps schould be fully ready after 50ms
mazgch 13:fb30e9923a7b 158 if (mdmIsEnabled)
mazgch 13:fb30e9923a7b 159 mdmILvlOe = 1; // ILVLEN: 0=enabled (i2c)
mazgch 7:e3eab86f1de9 160 }
mazgch 7:e3eab86f1de9 161 else if (gpsIsEnabled && !enable) // diasble gps
mazgch 7:e3eab86f1de9 162 {
mazgch 7:e3eab86f1de9 163 gpsIsEnabled = false;
mazgch 13:fb30e9923a7b 164 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 165 gpsRst = 0; // RESET: 1=operating -> 0=reset
mazgch 7:e3eab86f1de9 166 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 167 // the gps ldo may have to remain enabled for the level shifters of the modem
mazgch 7:e3eab86f1de9 168 if (!mdmIsEnabled)
mazgch 13:fb30e9923a7b 169 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 170 #else
mazgch 13:fb30e9923a7b 171 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 172 #endif
mazgch 7:e3eab86f1de9 173 }
mazgch 6:e11bf54dd344 174 }
mazgch 6:e11bf54dd344 175
mazgch 6:e11bf54dd344 176 void C027::gpsReset(void)
mazgch 6:e11bf54dd344 177 {
mazgch 6:e11bf54dd344 178 if (gpsIsEnabled)
mazgch 6:e11bf54dd344 179 {
mazgch 6:e11bf54dd344 180 gpsRst = 0; // RESET: 0=reset,1=operating
mazgch 6:e11bf54dd344 181 wait_ms(1);
mazgch 6:e11bf54dd344 182 gpsRst = 1; // RESET: 1=operating,0=reset
mazgch 6:e11bf54dd344 183 }
mazgch 6:e11bf54dd344 184 }