EPD_hardware_gpio.cpp

00001 /**
00002 * \file
00003 *
00004 * \brief The functions of EPD GPIO
00005 *
00006 * Copyright (c) 2012-2014 Pervasive Displays Inc. All rights reserved.
00007 *
00008 *  Authors: Pervasive Displays Inc.
00009 *
00010 *  Redistribution and use in source and binary forms, with or without
00011 *  modification, are permitted provided that the following conditions
00012 *  are met:
00013 *
00014 *  1. Redistributions of source code must retain the above copyright
00015 *     notice, this list of conditions and the following disclaimer.
00016 *  2. Redistributions in binary form must reproduce the above copyright
00017 *     notice, this list of conditions and the following disclaimer in
00018 *     the documentation and/or other materials provided with the
00019 *     distribution.
00020 *
00021 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00022 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00023 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00024 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
00025 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00026 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00027 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00028 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00029 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00030 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00031 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00032 */
00033 
00034 
00035 #include "EPD_hardware_gpio.h"
00036 
00037 #include "mbed.h"
00038 
00039 extern PinName SEC06;
00040 extern PinName SEC07;
00041 extern PinName SEC08;
00042 extern PinName SEC11;
00043 extern PinName SEC12;
00044 extern PinName SEC13;
00045 extern PinName SEC14;
00046 
00047 static DigitalOut* pinEpdCS = NULL;
00048 static DigitalIn*  pinEpdBusy = NULL;
00049 static DigitalOut* pinEpdBorder = NULL;
00050 static DigitalOut* pinFlashCS = NULL;
00051 static DigitalOut* pinEpdReset = NULL;
00052 static DigitalOut* pinEpdPanelOn = NULL;
00053 static DigitalOut* pinEpdDischarge = NULL;
00054 
00055 /**
00056 * \brief Set EPD_CS pin to high
00057 */
00058 void EPD_cs_high (void) {
00059     //set_gpio_high(EPD_CS_PORT,EPD_CS_PIN);
00060     *pinEpdCS = 1;
00061 }
00062 
00063 /**
00064 * \brief Set EPD_CS pin to low
00065 */
00066 void EPD_cs_low (void) {
00067 //  set_gpio_low(EPD_CS_PORT,EPD_CS_PIN);
00068     *pinEpdCS = 0;
00069 }
00070 
00071 /**
00072 * \brief Set Flash_CS pin to high
00073 */
00074 void EPD_flash_cs_high(void) {
00075 //  set_gpio_high(Flash_CS_PORT,Flash_CS_PIN);
00076     *pinFlashCS = 1;
00077 }
00078 
00079 /**
00080 * \brief Set Flash_CS pin to low
00081 */
00082 void EPD_flash_cs_low (void) {
00083 //  set_gpio_low(Flash_CS_PORT,Flash_CS_PIN);
00084     *pinFlashCS = 0;
00085 }
00086 
00087 /**
00088 * \brief Set /RESET pin to high
00089 */
00090 void EPD_rst_high (void) {
00091 //  set_gpio_high(EPD_RST_PORT,EPD_RST_PIN);
00092     *pinEpdReset = 1;
00093 }
00094 
00095 /**
00096 * \brief Set /RESET pin to low
00097 */
00098 void EPD_rst_low (void) {
00099 //  set_gpio_low(EPD_RST_PORT,EPD_RST_PIN);
00100     *pinEpdReset = 0;
00101 }
00102 
00103 /**
00104 * \brief Set DISCHARGE pin to high
00105 */
00106 void EPD_discharge_high (void) {
00107 //  set_gpio_high(EPD_DISCHARGE_PORT,EPD_DISCHARGE_PIN);
00108     *pinEpdDischarge = 1;
00109 }
00110 
00111 /**
00112 * \brief Set DISCHARGE pin to low
00113 */
00114 void EPD_discharge_low (void) {
00115 //  set_gpio_low(EPD_DISCHARGE_PORT,EPD_DISCHARGE_PIN);
00116     *pinEpdDischarge = 0;
00117 }
00118 
00119 /**
00120 * \brief Set Vcc (PANEL_ON) to high
00121 */
00122 void EPD_Vcc_turn_on (void) {
00123 //  set_gpio_high(EPD_PANELON_PORT,EPD_PANELON_PIN);
00124     *pinEpdPanelOn = 1;
00125 }
00126 
00127 /**
00128 * \brief Set Vcc (PANEL_ON) to low
00129 */
00130 void EPD_Vcc_turn_off (void) {
00131 //  set_gpio_low(EPD_PANELON_PORT,EPD_PANELON_PIN);
00132     *pinEpdPanelOn = 0;
00133 }
00134 
00135 /**
00136 * \brief Set BORDER_CONTROL pin to high
00137 */
00138 void EPD_border_high(void) {
00139 //  set_gpio_high(EPD_PANELON_PORT,EPD_BORDER_PIN);
00140     *pinEpdBorder = 1;
00141 }
00142 
00143 /**
00144 * \brief Set BORDER_CONTROL pin to low
00145 */
00146 void EPD_border_low (void) {
00147 //  set_gpio_low(EPD_PANELON_PORT,EPD_BORDER_PIN);
00148     *pinEpdBorder = 0;
00149 }
00150 
00151 /**
00152 * \brief Set PWM pin to high
00153 */
00154 void EPD_pwm_high(void) {
00155 //  set_gpio_high(PWM_PORT,PWM_PIN);
00156     
00157     // Not in use
00158 }
00159 
00160 /**
00161 * \brief Set PWM pin to low
00162 */
00163 void EPD_pwm_low (void) {
00164 //    config_gpio_dir_o(SPIMISO_PORT,SPIMISO_PIN);
00165 //  set_gpio_low(PWM_PORT,PWM_PIN);
00166     
00167     // Not in use
00168 }
00169 
00170 /**
00171 * \brief Set MISO pin of SPI to low
00172 */
00173 void SPIMISO_low(void) {
00174 //  config_gpio_dir_o(SPIMISO_PORT,SPIMISO_PIN);
00175 //  set_gpio_low(SPIMISO_PORT,SPIMISO_PIN);
00176     
00177     // Not in use
00178 }
00179 
00180 /**
00181 * \brief Set MOSI pin of SPI to low
00182 */
00183 void SPIMOSI_low(void) {
00184 //  set_gpio_low(SPIMOSI_PORT,SPIMOSI_PIN);
00185     
00186     // Not in use
00187 }
00188 
00189 /**
00190 * \brief Set Clock of SPI to low
00191 */
00192 void SPICLK_low(void) {
00193 //  set_gpio_low(SPICLK_PORT,SPICLK_PIN);
00194     
00195     // Not in use
00196 }
00197 
00198 /**
00199 * \brief Get BUSY pin status
00200 */
00201 bool EPD_IsBusy(void) {
00202 //  return (bool)input_get(EPD_BUSY_PORT,EPD_BUSY_PIN);
00203     return pinEpdBusy->read();
00204 }
00205 
00206 /**
00207 * \brief Configure GPIO
00208 */
00209 void EPD_initialize_gpio(void) {
00210 
00211     pinEpdCS = new DigitalOut(SEC06);        // SEC-06 Requires J14 9-10 to NOT be connected
00212     pinEpdBusy = new DigitalIn(SEC07);       // SEC-07
00213     pinEpdBorder = new DigitalOut(SEC08);    // SEC-08
00214     pinFlashCS = new DigitalOut(SEC11);      // SEC-11
00215     pinEpdReset = new DigitalOut(SEC12);     // SEC-12
00216     pinEpdPanelOn = new DigitalOut(SEC13);   // SEC-13
00217     pinEpdDischarge = new DigitalOut(SEC14); // SEC-14
00218 
00219 //  config_gpio_dir_i( EPD_BUSY_PORT,EPD_BUSY_PIN);
00220 //    //Set Xin to GPIO
00221 //  BITCLR (CS_PORT_SEL, EPD_CS_PIN);
00222 //  BITCLR (CS_PORT_SEL2,EPD_CS_PIN);
00223 //    //Set Xout to GPIO
00224 //    BITCLR (Flash_CS_PORT_SEL, Flash_CS_PIN);
00225 //  BITCLR (Flash_CS_PORT_SEL2,Flash_CS_PIN);
00226 //    
00227 //  config_gpio_dir_o( EPD_CS_PORT,EPD_CS_PIN);
00228 //  config_gpio_dir_o( EPD_RST_PORT,EPD_RST_PIN);
00229 //  config_gpio_dir_o( EPD_PANELON_PORT,EPD_PANELON_PIN);
00230 //  config_gpio_dir_o( EPD_DISCHARGE_PORT,EPD_DISCHARGE_PIN);
00231 //  config_gpio_dir_o( EPD_BORDER_PORT,EPD_BORDER_PIN);
00232 //  config_gpio_dir_o( Flash_CS_PORT,Flash_CS_PIN);
00233 //    config_gpio_dir_o( PWM_PORT,PWM_PIN);
00234 //  config_gpio_dir_i( Temper_PORT,Temper_PIN);
00235     EPD_flash_cs_high();
00236     EPD_border_low();
00237 }
00238