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103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
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spi_drv.h - Library for Arduino Wifi shield.
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Copyright (c) 2011-2014 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef SPI_Drv_h
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#define SPI_Drv_h
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#include <inttypes.h>
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#include "wifi_spi.h"
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#define SPI_START_CMD_DELAY 10
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#define NO_LAST_PARAM 0
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#define LAST_PARAM 1
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#define DUMMY_DATA 0xFF
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#define WAIT_FOR_SLAVE_SELECT() \
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SpiDrv::waitForSlaveReady(); \
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SpiDrv::spiSlaveSelect();
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class SpiDrv
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{
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private:
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//static bool waitSlaveReady();
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static void waitForSlaveSign();
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static void getParam(uint8_t* param);
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public:
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static void begin();
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static void end();
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static void spiDriverInit();
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static void spiSlaveSelect();
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static void spiSlaveDeselect();
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static char spiTransfer(volatile char data);
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static void waitForSlaveReady();
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//static int waitSpiChar(char waitChar, char* readChar);
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static int waitSpiChar(unsigned char waitChar);
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static int readAndCheckChar(char checkChar, char* readChar);
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static char readChar();
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static int waitResponseParams(uint8_t cmd, uint8_t numParam, tParam* params);
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static int waitResponseCmd(uint8_t cmd, uint8_t numParam, uint8_t* param, uint8_t* param_len);
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static int waitResponseData8(uint8_t cmd, uint8_t* param, uint8_t* param_len);
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static int waitResponseData16(uint8_t cmd, uint8_t* param, uint16_t* param_len);
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/*
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static int waitResponse(uint8_t cmd, tParam* params, uint8_t* numParamRead, uint8_t maxNumParams);
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static int waitResponse(uint8_t cmd, uint8_t numParam, uint8_t* param, uint16_t* param_len);
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*/
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static int waitResponse(uint8_t cmd, uint8_t* numParamRead, uint8_t** params, uint8_t maxNumParams);
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static void sendParam(uint8_t* param, uint8_t param_len, uint8_t lastParam = NO_LAST_PARAM);
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static void sendParamLen8(uint8_t param_len);
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static void sendParamLen16(uint16_t param_len);
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static uint8_t readParamLen8(uint8_t* param_len = NULL);
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static uint16_t readParamLen16(uint16_t* param_len = NULL);
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static void sendBuffer(uint8_t* param, uint16_t param_len, uint8_t lastParam = NO_LAST_PARAM);
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static void sendParam(uint16_t param, uint8_t lastParam = NO_LAST_PARAM);
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static void sendCmd(uint8_t cmd, uint8_t numParam);
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};
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extern SpiDrv spiDrv;
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#endif
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