shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
196:fdfa63dee410 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 194:718a82ebba31 1 /* mbed Microcontroller Library
mbed_official 194:718a82ebba31 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 194:718a82ebba31 3 *
mbed_official 194:718a82ebba31 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 194:718a82ebba31 5 * you may not use this file except in compliance with the License.
mbed_official 194:718a82ebba31 6 * You may obtain a copy of the License at
mbed_official 194:718a82ebba31 7 *
mbed_official 194:718a82ebba31 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 194:718a82ebba31 9 *
mbed_official 194:718a82ebba31 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 194:718a82ebba31 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 194:718a82ebba31 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 194:718a82ebba31 13 * See the License for the specific language governing permissions and
mbed_official 194:718a82ebba31 14 * limitations under the License.
mbed_official 194:718a82ebba31 15 */
mbed_official 194:718a82ebba31 16 #include "gpio_api.h"
mbed_official 194:718a82ebba31 17 #include "wait_api.h"
mbed_official 194:718a82ebba31 18 #include "C027_api.h"
mbed_official 194:718a82ebba31 19
mbed_official 194:718a82ebba31 20 static gpio_t mdmEn, mdmLvlOe, mdmILvlOe, mdmUsbDet;
mbed_official 194:718a82ebba31 21 static gpio_t gpsEn;
mbed_official 194:718a82ebba31 22
mbed_official 194:718a82ebba31 23 void c027_init(void) {
mbed_official 194:718a82ebba31 24 gpio_t led, mdmRts, mdmRst, gpsRst, mdmPwrOn;
mbed_official 194:718a82ebba31 25 // start with modem disabled
mbed_official 194:718a82ebba31 26 gpio_init_out_ex(&mdmEn, MDMEN, 0);
mbed_official 194:718a82ebba31 27 gpio_init_out_ex(&mdmRst, MDMRST, 1);
mbed_official 194:718a82ebba31 28 gpio_init_out_ex(&mdmPwrOn, MDMPWRON, 1);
mbed_official 194:718a82ebba31 29 gpio_init_out_ex(&mdmLvlOe, MDMLVLOE, 1); // LVLEN: 1=disabled
mbed_official 194:718a82ebba31 30 gpio_init_out_ex(&mdmILvlOe, MDMILVLOE, 0); // ILVLEN: 0=disabled
mbed_official 194:718a82ebba31 31 gpio_init_out_ex(&mdmUsbDet, MDMUSBDET, 0);
mbed_official 194:718a82ebba31 32 gpio_init_out_ex(&mdmRts, MDMRTS, 0);
mbed_official 194:718a82ebba31 33 // start with gps disabled
mbed_official 194:718a82ebba31 34 gpio_init_out_ex(&gpsEn, GPSEN, 0);
mbed_official 194:718a82ebba31 35 gpio_init_out_ex(&gpsRst, GPSRST, 1);
mbed_official 194:718a82ebba31 36 // led should be off
mbed_official 194:718a82ebba31 37 gpio_init_out_ex(&led, LED, 0);
mbed_official 194:718a82ebba31 38
mbed_official 194:718a82ebba31 39 wait_ms(50); // when USB cable is inserted the interface chip issues
mbed_official 194:718a82ebba31 40 }
mbed_official 194:718a82ebba31 41
mbed_official 194:718a82ebba31 42 void c027_mdm_powerOn(int usb) {
mbed_official 194:718a82ebba31 43 // turn on the mode by enabling power with power on pin low and correct USB detect level
mbed_official 194:718a82ebba31 44 gpio_write(&mdmUsbDet, usb ? 1 : 0); // USBDET: 0=disabled, 1=enabled
mbed_official 194:718a82ebba31 45 if (!gpio_read(&mdmEn)) { // enable modem
mbed_official 194:718a82ebba31 46 gpio_write(&mdmEn, 1); // LDOEN: 1=on
mbed_official 194:718a82ebba31 47 wait_ms(1); // wait until supply switched off
mbed_official 194:718a82ebba31 48 // now we can safely enable the level shifters
mbed_official 194:718a82ebba31 49 gpio_write(&mdmLvlOe, 0); // LVLEN: 0=enabled (uart/gpio)
mbed_official 194:718a82ebba31 50 if (gpio_read(&gpsEn))
mbed_official 194:718a82ebba31 51 gpio_write(&mdmILvlOe, 1); // ILVLEN: 1=enabled (i2c)
mbed_official 194:718a82ebba31 52 }
mbed_official 194:718a82ebba31 53 }
mbed_official 194:718a82ebba31 54
mbed_official 194:718a82ebba31 55 void c027_mdm_powerOff(void) {
mbed_official 196:fdfa63dee410 56 if (gpio_read(&mdmEn)) {
mbed_official 194:718a82ebba31 57 // diable all level shifters
mbed_official 194:718a82ebba31 58 gpio_write(&mdmILvlOe, 0); // ILVLEN: 0=disabled (i2c)
mbed_official 194:718a82ebba31 59 gpio_write(&mdmLvlOe, 1); // LVLEN: 1=disabled (uart/gpio)
mbed_official 194:718a82ebba31 60 gpio_write(&mdmUsbDet, 0); // USBDET: 0=disabled
mbed_official 194:718a82ebba31 61 // now we can savely switch off the ldo
mbed_official 194:718a82ebba31 62 gpio_write(&mdmEn, 0); // LDOEN: 0=off
mbed_official 194:718a82ebba31 63 }
mbed_official 194:718a82ebba31 64 }
mbed_official 194:718a82ebba31 65
mbed_official 194:718a82ebba31 66 void c027_gps_powerOn(void) {
mbed_official 194:718a82ebba31 67 if (!gpio_read(&gpsEn)) {
mbed_official 194:718a82ebba31 68 // switch on power supply
mbed_official 194:718a82ebba31 69 gpio_write(&gpsEn, 1); // LDOEN: 1=on
mbed_official 194:718a82ebba31 70 wait_ms(1); // wait until supply switched off
mbed_official 194:718a82ebba31 71 if (gpio_read(&mdmEn))
mbed_official 194:718a82ebba31 72 gpio_write(&mdmILvlOe, 1); // ILVLEN: 1=enabled (i2c)
mbed_official 194:718a82ebba31 73 }
mbed_official 194:718a82ebba31 74 }
mbed_official 194:718a82ebba31 75
mbed_official 194:718a82ebba31 76 void c027_gps_powerOff(void) {
mbed_official 194:718a82ebba31 77 if (gpio_read(&gpsEn)) {
mbed_official 194:718a82ebba31 78 gpio_write(&mdmILvlOe, 0); // ILVLEN: 0=disabled (i2c)
mbed_official 194:718a82ebba31 79 gpio_write(&gpsEn, 0); // LDOEN: 0=off
mbed_official 194:718a82ebba31 80 }
mbed_official 194:718a82ebba31 81 }