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@14:e30f90b5447e, 2013-12-06 (annotated)

Committer:
mazgch
Date:
Fri Dec 06 09:27:49 2013 +0000
Revision:
14:e30f90b5447e
Parent:
13:fb30e9923a7b
Child:
15:971186932592
switch to new revision of board ; for revision A version of board you have to use the define C027_REVA

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
mazgch 13:fb30e9923a7b 42 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
mazgch 13:fb30e9923a7b 43 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 8:a356376db984 44 mdmUsbDet = 0; // 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
mazgch 8:a356376db984 47 mdmRst = 0; // 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
mazgch 6:e11bf54dd344 52 void C027::mdmPower(bool enable)
mazgch 6:e11bf54dd344 53 {
mazgch 7:e3eab86f1de9 54 if (!mdmIsEnabled && enable) // enable modem
mazgch 6:e11bf54dd344 55 {
mazgch 7:e3eab86f1de9 56 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 57 // we need the gps ldo for the level shifters of the modem
mazgch 8:a356376db984 58 gpsEn = 1; // LDOEN(gps): 0=off -> 1=on
mazgch 7:e3eab86f1de9 59 #endif
mazgch 14:e30f90b5447e 60 mdmPwrOn = 0; // PWRON: 0=turn on
mazgch 8:a356376db984 61 mdmEn = 0; // LDOEN: 0=off
mazgch 8:a356376db984 62 mdmRst = 0; // RESET: 0=reset
mazgch 8:a356376db984 63 mdmLvlOe = 1; // LVLEN: 1=disabled
mazgch 13:fb30e9923a7b 64 mdmILvlOe = 0; // ILVLEN: 0=disabled
mazgch 14:e30f90b5447e 65 mdmUsbDet = mdmUseUsb ? 1 : 0; // USBDET: 0=disabled, 1=enabled
mazgch 8:a356376db984 66 wait_ms( 10); // wait until supply switched off
mazgch 8:a356376db984 67 mdmEn = 1; // LDOEN: 0=off -> 1=on
mazgch 8:a356376db984 68 wait_ms( 10); // wait until supply stable and on
mazgch 8:a356376db984 69 wait_ms(300); // power on sequence is triggered by keeping reset 50ms-300ms low
mazgch 8:a356376db984 70 mdmRst = 1; // RESET: 0=reset -> 1=operating
mazgch 14:e30f90b5447e 71 wait_ms(150); // LISA-C requires 150ms low to turn on
mazgch 14:e30f90b5447e 72 mdmPwrOn = 1; // PWRON: 0=turn on -> 1=idle
mazgch 7:e3eab86f1de9 73 mdmIsEnabled = true;
mazgch 10:bc9e2eb5daa8 74 // the interfaces of the modem should be fully ready after a certain period
mazgch 10:bc9e2eb5daa8 75 // LISA-U200 5000ms
mazgch 10:bc9e2eb5daa8 76 // SARA-G350 3000ms
mazgch 10:bc9e2eb5daa8 77 // LISA-C200
mazgch 10:bc9e2eb5daa8 78 wait_ms(1000);
mazgch 13:fb30e9923a7b 79 mdmLvlOe = 0; // LVLEN: 0=enabled (uart/gpio)
mazgch 13:fb30e9923a7b 80 if (gpsIsEnabled)
mazgch 13:fb30e9923a7b 81 mdmILvlOe = 1; // ILVLEN: 1=enabled (i2c)
mazgch 7:e3eab86f1de9 82 }
mazgch 7:e3eab86f1de9 83 else if (mdmIsEnabled && !enable) // disable modem
mazgch 7:e3eab86f1de9 84 {
mazgch 7:e3eab86f1de9 85 mdmIsEnabled = false;
mazgch 7:e3eab86f1de9 86 // initiate power off sequence by setting PwnOn low for >1s
mazgch 13:fb30e9923a7b 87 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 88 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
mazgch 8:a356376db984 89 mdmUsbDet = 0; // USBDET: 0=disabled
mazgch 8:a356376db984 90 mdmPwrOn = 0; // PWRON: 0=active
mazgch 8:a356376db984 91 wait_ms(1000); // send to sleep
mazgch 8:a356376db984 92 mdmPwrOn = 1; // PWRON: 0=active -> 1=idle
mazgch 7:e3eab86f1de9 93 // now we can savely switch off the ldo
mazgch 8:a356376db984 94 mdmRst = 0; // RESET: 1=operating -> 0=reset
mazgch 8:a356376db984 95 mdmEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 96 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 97 // the gps ldo may no longer be needed level shifters of the modem
mazgch 7:e3eab86f1de9 98 // so we switch it off if the gps is not enabled
mazgch 7:e3eab86f1de9 99 if (!gpsIsEnabled)
mazgch 7:e3eab86f1de9 100 gpsEn = 0; // LDOEN(gps): 1=on -> 0=off
mazgch 7:e3eab86f1de9 101 #endif
mazgch 6:e11bf54dd344 102 }
mazgch 13:fb30e9923a7b 103
mazgch 6:e11bf54dd344 104 }
mazgch 6:e11bf54dd344 105
mazgch 14:e30f90b5447e 106 void C027::mdmUsbEnable(bool enable)
mazgch 14:e30f90b5447e 107 {
mazgch 14:e30f90b5447e 108 mdmUseUsb = enable;
mazgch 14:e30f90b5447e 109 if (mdmIsEnabled)
mazgch 14:e30f90b5447e 110 mdmUsbDet = mdmUseUsb ? 1 : 0;
mazgch 14:e30f90b5447e 111 }
mazgch 14:e30f90b5447e 112
mazgch 6:e11bf54dd344 113 void C027::mdmReset(void)
mazgch 6:e11bf54dd344 114 {
mazgch 8:a356376db984 115 if (mdmIsEnabled)
mazgch 8:a356376db984 116 {
mazgch 8:a356376db984 117 mdmRst = 0; // RESET: 0=reset
mazgch 8:a356376db984 118 // power on sequence is triggered by reset low
mazgch 8:a356376db984 119 // LISA-U200 50ms
mazgch 8:a356376db984 120 // SARA-G350 50ms
mazgch 8:a356376db984 121 // LISA-C200 300ms
mazgch 8:a356376db984 122 wait_ms(300);
mazgch 8:a356376db984 123 mdmRst = 1; // RESET: 0=reset -> 1=operating
mazgch 8:a356376db984 124 }
mazgch 8:a356376db984 125 }
mazgch 8:a356376db984 126
mazgch 8:a356376db984 127 void C027::mdmWakeup(void)
mazgch 8:a356376db984 128 {
mazgch 6:e11bf54dd344 129 if (mdmIsEnabled)
mazgch 6:e11bf54dd344 130 {
mazgch 8:a356376db984 131 mdmPwrOn = 0;
mazgch 8:a356376db984 132 // wakeup the device by low pulse:
mazgch 8:a356376db984 133 // LISA-U200 50-80us
mazgch 8:a356376db984 134 // SARA-G350 5ms
mazgch 8:a356376db984 135 // LISA-C200 150ms
mazgch 8:a356376db984 136 wait_ms(150);
mazgch 8:a356376db984 137 mdmPwrOn = 1;
mazgch 6:e11bf54dd344 138 }
mazgch 8:a356376db984 139 }
mazgch 8:a356376db984 140
mazgch 8:a356376db984 141 void C027::mdmSleep(void)
mazgch 8:a356376db984 142 {
mazgch 8:a356376db984 143 if (mdmIsEnabled)
mazgch 8:a356376db984 144 {
mazgch 8:a356376db984 145 mdmPwrOn = 0;
mazgch 8:a356376db984 146 // going to sleep is triggerd by low pulse:
mazgch 8:a356376db984 147 // LISA-U200 1000ms
mazgch 8:a356376db984 148 // SARA-G350 n/a
mazgch 8:a356376db984 149 // LISA-C200 n/a
mazgch 8:a356376db984 150 wait_ms(1000);
mazgch 8:a356376db984 151 mdmPwrOn = 1;
mazgch 8:a356376db984 152 }
mazgch 7:e3eab86f1de9 153 }
mazgch 7:e3eab86f1de9 154
mazgch 7:e3eab86f1de9 155 void C027::gpsPower(bool enable)
mazgch 7:e3eab86f1de9 156 {
mazgch 7:e3eab86f1de9 157 if (!gpsIsEnabled && enable) // enable gps
mazgch 7:e3eab86f1de9 158 {
mazgch 7:e3eab86f1de9 159 gpsRst = 0; // RESET: 0=reset
mazgch 7:e3eab86f1de9 160 gpsEn = 1; // LDOEN: 0=off -> 1=on
mazgch 7:e3eab86f1de9 161 wait_ms(1); // wait until stable
mazgch 7:e3eab86f1de9 162 gpsRst = 1; // RESET: 0=reset -> 1=operating
mazgch 7:e3eab86f1de9 163 gpsIsEnabled = true;
mazgch 7:e3eab86f1de9 164 // the gps schould be fully ready after 50ms
mazgch 13:fb30e9923a7b 165 if (mdmIsEnabled)
mazgch 13:fb30e9923a7b 166 mdmILvlOe = 1; // ILVLEN: 0=enabled (i2c)
mazgch 7:e3eab86f1de9 167 }
mazgch 7:e3eab86f1de9 168 else if (gpsIsEnabled && !enable) // diasble gps
mazgch 7:e3eab86f1de9 169 {
mazgch 7:e3eab86f1de9 170 gpsIsEnabled = false;
mazgch 13:fb30e9923a7b 171 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 172 gpsRst = 0; // RESET: 1=operating -> 0=reset
mazgch 7:e3eab86f1de9 173 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 174 // the gps ldo may have to remain enabled for the level shifters of the modem
mazgch 7:e3eab86f1de9 175 if (!mdmIsEnabled)
mazgch 13:fb30e9923a7b 176 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 177 #else
mazgch 13:fb30e9923a7b 178 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 179 #endif
mazgch 7:e3eab86f1de9 180 }
mazgch 6:e11bf54dd344 181 }
mazgch 6:e11bf54dd344 182
mazgch 6:e11bf54dd344 183 void C027::gpsReset(void)
mazgch 6:e11bf54dd344 184 {
mazgch 6:e11bf54dd344 185 if (gpsIsEnabled)
mazgch 6:e11bf54dd344 186 {
mazgch 6:e11bf54dd344 187 gpsRst = 0; // RESET: 0=reset,1=operating
mazgch 6:e11bf54dd344 188 wait_ms(1);
mazgch 6:e11bf54dd344 189 gpsRst = 1; // RESET: 1=operating,0=reset
mazgch 6:e11bf54dd344 190 }
mazgch 6:e11bf54dd344 191 }