diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c')
-rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c new file mode 100644 index 0000000000..cb290d45e7 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/hal/TARGET_NXP/TARGET_LPC176X/TARGET_UBLOX_C027/C027_api.c @@ -0,0 +1,81 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "gpio_api.h" +#include "wait_api.h" +#include "C027_api.h" + +static gpio_t mdmEn, mdmLvlOe, mdmILvlOe, mdmUsbDet; +static gpio_t gpsEn; + +void c027_init(void) { + gpio_t led, mdmRts, mdmRst, gpsRst, mdmPwrOn; + // start with modem disabled + gpio_init_out_ex(&mdmEn, MDMEN, 0); + gpio_init_out_ex(&mdmRst, MDMRST, 1); + gpio_init_out_ex(&mdmPwrOn, MDMPWRON, 1); + gpio_init_out_ex(&mdmLvlOe, MDMLVLOE, 1); // LVLEN: 1=disabled + gpio_init_out_ex(&mdmILvlOe, MDMILVLOE, 0); // ILVLEN: 0=disabled + gpio_init_out_ex(&mdmUsbDet, MDMUSBDET, 0); + gpio_init_out_ex(&mdmRts, MDMRTS, 0); + // start with gps disabled + gpio_init_out_ex(&gpsEn, GPSEN, 0); + gpio_init_out_ex(&gpsRst, GPSRST, 1); + // led should be off + gpio_init_out_ex(&led, LED, 0); + + wait_ms(50); // when USB cable is inserted the interface chip issues +} + +void c027_mdm_powerOn(int usb) { + // turn on the mode by enabling power with power on pin low and correct USB detect level + gpio_write(&mdmUsbDet, usb ? 1 : 0); // USBDET: 0=disabled, 1=enabled + if (!gpio_read(&mdmEn)) { // enable modem + gpio_write(&mdmEn, 1); // LDOEN: 1=on + wait_ms(1); // wait until supply switched off + // now we can safely enable the level shifters + gpio_write(&mdmLvlOe, 0); // LVLEN: 0=enabled (uart/gpio) + if (gpio_read(&gpsEn)) + gpio_write(&mdmILvlOe, 1); // ILVLEN: 1=enabled (i2c) + } +} + +void c027_mdm_powerOff(void) { + if (gpio_read(&mdmEn)) { + // diable all level shifters + gpio_write(&mdmILvlOe, 0); // ILVLEN: 0=disabled (i2c) + gpio_write(&mdmLvlOe, 1); // LVLEN: 1=disabled (uart/gpio) + gpio_write(&mdmUsbDet, 0); // USBDET: 0=disabled + // now we can savely switch off the ldo + gpio_write(&mdmEn, 0); // LDOEN: 0=off + } +} + +void c027_gps_powerOn(void) { + if (!gpio_read(&gpsEn)) { + // switch on power supply + gpio_write(&gpsEn, 1); // LDOEN: 1=on + wait_ms(1); // wait until supply switched off + if (gpio_read(&mdmEn)) + gpio_write(&mdmILvlOe, 1); // ILVLEN: 1=enabled (i2c) + } +} + +void c027_gps_powerOff(void) { + if (gpio_read(&gpsEn)) { + gpio_write(&mdmILvlOe, 0); // ILVLEN: 0=disabled (i2c) + gpio_write(&gpsEn, 0); // LDOEN: 0=off + } +} |