4d0f5b8b15
This buffer should be filled by target device. As the USBasp is slave at USB side, it should also be slave at the SPI side, so it can handle the buffering well.
69 lines
1.7 KiB
C
Executable File
69 lines
1.7 KiB
C
Executable File
/*
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* isp.h - part of USBasp
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*
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* Autor..........: Thomas Fischl <tfischl@gmx.de>
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* Description....: Provides functions for communication/programming
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* over ISP interface
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* Licence........: GNU GPL v2 (see Readme.txt)
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* Creation Date..: 2005-02-23
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* Last change....: 2009-02-28
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*/
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#ifndef __isp_h_included__
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#define __isp_h_included__
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#ifndef uchar
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#define uchar unsigned char
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#endif
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#define ISP_OUT PORTB
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#define ISP_IN PINB
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#define ISP_DDR DDRB
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#define ISP_RST PB2
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#define ISP_MOSI PB3
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#define ISP_MISO PB4
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#define ISP_SCK PB5
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/* Prepare connection to target device */
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void ispConnect();
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/* Close connection to target device */
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void ispDisconnect();
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/* Prepare to listen to target device */
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void spiInit();
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/* read an write a byte from isp using software (slow) */
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uchar ispTransmit_sw(uchar send_byte);
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/* read an write a byte from isp using hardware (fast) */
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uchar ispTransmit_hw(uchar send_byte);
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/* enter programming mode */
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uchar ispEnterProgrammingMode();
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/* read byte from eeprom at given address */
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uchar ispReadEEPROM(unsigned int address);
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/* write byte to flash at given address */
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uchar ispWriteFlash(unsigned long address, uchar data, uchar pollmode);
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uchar ispFlushPage(unsigned long address, uchar pollvalue);
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/* read byte from flash at given address */
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uchar ispReadFlash(unsigned long address);
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/* write byte to eeprom at given address */
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uchar ispWriteEEPROM(unsigned int address, uchar data);
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/* pointer to sw or hw transmit function */
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uchar (*ispTransmit)(uchar);
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/* set SCK speed. call before ispConnect! */
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void ispSetSCKOption(uchar sckoption);
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/* load extended address byte */
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void ispLoadExtendedAddressByte(unsigned long address);
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#endif /* __isp_h_included__ */
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