00001 /*! \file spi.h \brief SPI Interface Driver for LPC2100. */ 00002 //***************************************************************************** 00003 // 00004 // File Name : 'spi.h' 00005 // Title : SPI Interface Driver for LPC2100 00006 // Author : Pascal Stang - Copyright (C) 2004 00007 // Created : 2004.05.05 00008 // Revised : 2004.07.12 00009 // Version : 0.1 00010 // Target MCU : ARM processors 00011 // Editor Tabs : 4 00012 // 00013 // NOTE: This code is currently below version 1.0, and therefore is considered 00014 // to be lacking in some functionality or documentation, or may not be fully 00015 // tested. Nonetheless, you can expect most functions to work. 00016 // 00017 // This code is distributed under the GNU Public License 00018 // which can be found at http://www.gnu.org/licenses/gpl.txt 00019 // 00020 //***************************************************************************** 00021 00022 #ifndef SPI_H 00023 #define SPI_H 00024 00025 // bit defines 00026 #define SPCR_CPHA 3 00027 #define SPCR_CPOL 4 00028 #define SPCR_MSTR 5 00029 #define SPCR_LSBF 6 00030 #define SPCR_SPIE 7 00031 00032 #define SPSR_ABRT 3 00033 #define SPSR_MODF 4 00034 #define SPSR_ROVR 5 00035 #define SPSR_WCOL 6 00036 #define SPSR_SPIF 7 00037 00038 // functions 00039 00040 // SPI interface initializer 00041 void spiInit(void); 00042 00043 void spiSetClockDiv(u08 clockdiv); 00044 00045 // spiSendByte(u08 data) waits until the SPI interface is ready 00046 // and then sends a single byte over the SPI port. This command 00047 // does not receive anything. 00048 void spiSendByte(u08 data); 00049 00050 // spiTransferByte(u08 data) waits until the SPI interface is ready 00051 // and then sends a single byte over the SPI port. The function also 00052 // returns the byte that was received during transmission. 00053 u08 spiTransferByte(u08 data); 00054 00055 #endif
1.4.2