99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*****************************************************************************
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* | File : DEV_Config.c
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* | Author : Waveshare team
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* | Function : Hardware underlying interface
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2019-06-05
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* | Info :
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documnetation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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******************************************************************************/
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#include "DEV_Config.h"
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/******************************************************************************
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function: Initialization pin
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parameter:
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Info:
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******************************************************************************/
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static void DEV_GPIOConfig(void)
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{
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SYSFS_GPIO_Export(EPD_CS_PIN);
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SYSFS_GPIO_Export(EPD_DC_PIN);
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SYSFS_GPIO_Export(EPD_RST_PIN);
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SYSFS_GPIO_Export(EPD_BUSY_PIN);
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SYSFS_GPIO_Direction(EPD_CS_PIN, OUT);
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SYSFS_GPIO_Direction(EPD_DC_PIN, OUT);
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SYSFS_GPIO_Direction(EPD_RST_PIN, OUT);
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SYSFS_GPIO_Direction(EPD_BUSY_PIN, IN);
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}
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void DEV_Delay_us(UWORD xus)
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{
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for(int j=xus; j > 0; j--);
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}
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void DEV_Delay_ms(UWORD xms)
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{
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for(int j=xms; j > 0; j--)
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for(int j=xms; j > 0; j--);
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}
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/******************************************************************************
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function: Module Initialize, the BCM2835 library and initialize the pins, SPI protocol
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parameter:
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Info:
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******************************************************************************/
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UBYTE DEV_Module_Init(void)
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{
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DEV_GPIOConfig();
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SYSFS_software_spi_begin();
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SYSFS_software_spi_setBitOrder(SOFTWARE_SPI_MSBFIRST);
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SYSFS_software_spi_setDataMode(SOFTWARE_SPI_Mode0);
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SYSFS_software_spi_setClockDivider(SOFTWARE_SPI_CLOCK_DIV4);
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return 0;
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}
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void DEV_SPI_WriteByte(UBYTE value)
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{
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SYSFS_software_spi_transfer(value);
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}
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/******************************************************************************
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function: Module exits, closes SPI and BCM2835 library
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parameter:
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Info:
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******************************************************************************/
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void DEV_Module_Exit(void)
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{
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SYSFS_software_spi_end();
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SYSFS_GPIO_Write(EPD_CS_PIN, LOW);
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SYSFS_GPIO_Write(EPD_DC_PIN, LOW);
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SYSFS_GPIO_Write(EPD_RST_PIN, LOW);
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SYSFS_GPIO_Unexport(EPD_CS_PIN);
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SYSFS_GPIO_Unexport(EPD_DC_PIN);
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SYSFS_GPIO_Unexport(EPD_RST_PIN);
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SYSFS_GPIO_Unexport(EPD_BUSY_PIN);
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}
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