X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/f7cde02b80c001875231c8ef21211214ebc742ed..24f730fce3f2022762011d795c3feada5ef874b3:/Projects/AVRISP/AVRISP.txt?ds=sidebyside diff --git a/Projects/AVRISP/AVRISP.txt b/Projects/AVRISP/AVRISP.txt index a9d550786..35cf93770 100644 --- a/Projects/AVRISP/AVRISP.txt +++ b/Projects/AVRISP/AVRISP.txt @@ -6,23 +6,18 @@ /** \mainpage AVRISP MKII Programmer Project * - * \section SSec_Compat Demo Compatibility: + * \section SSec_Compat Project Compatibility: * - * The following table indicates what microcontrollers are compatible with this demo. + * The following list indicates what microcontrollers are compatible with this project. * - * - AT90USB1287 - * - AT90USB1286 - * - AT90USB647 - * - AT90USB646 - * - ATMEGA32U6 - * - ATMEGA32U4 - * - ATMEGA16U4 - * - AT90USB162 - * - AT90USB82 + * - Series 7 USB AVRs + * - Series 6 USB AVRs + * - Series 4 USB AVRs + * - Series 2 USB AVRs (8KB versions with reduced features only) * * \section SSec_Info USB Information: * - * The following table gives a rundown of the USB utilization of this demo. + * The following table gives a rundown of the USB utilization of this project. * * * @@ -56,55 +51,113 @@ * level conversion can be made to allow for the programming of 3.3V AVR designs. * * This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII - * drivers. When promted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio. + * drivers. When prompted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio. * * Note that this design currently has several limitations: - * - Minimum target clock speed of 500KHz due to hardware SPI used + * - Minimum ISP target clock speed of 500KHz due to hardware SPI used * - No reversed/shorted target connector detection and notification * - * On AVR models with an ADC converter, ACC should be tied to 5V (e.g. VBUS) and the VTARGET_ADC_CHANNEL token should be + * On AVR models with an ADC converter, AVCC should be tied to 5V (e.g. VBUS) and the VTARGET_ADC_CHANNEL token should be * set to an appropriate ADC channel number in the project makefile for VTARGET detection to operate correctly. On models * without an ADC converter, VTARGET will report at a fixed 5V level. * - * Connections to the device are simple: + * When compiled for the XPLAIN board target, this will automatically configure itself for the correct connections to the + * XPLAIN's XMEGA AVR, and will enable PDI only programming support (since ISP mode is not needed). + * + * While this application can be compiled for USB AVRs with as little as 8KB of FLASH, for full functionality 16KB or more + * of FLASH is required. On 8KB devices, either ISP or PDI programming support can be disabled to reduce program size. + * + * \section Sec_ISP ISP Connections + * Connections to the device for SPI programming (when enabled): * *
* * * - * - * - * - * + * * * * * + * + * + * + * + * + * * * * * + * + * + * + * + * + * + * + * + * + * + * * * * * + * + * + *
Programmer Pin:Target Device Pin:
MOSIPDIISP 6 Pin Layout:
MISOPDO1
ADCx 1VTARGET2
SCLKSCLK3
MOSIPDI4
PORTx.y 2/RESET5
GNDGND6
+ * + * 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n + * 2 See \ref SSec_Options section + * + * \section Sec_PDI PDI Connections + * Connections to the device for PDI programming1 (when enabled): + * + * + * + * + * + * + * + * + * + * + * * * * * + * + * + * + * + * + * + * + * + * + * + * * * * - * + * + * + * + * + * + * + * * *
Programmer Pin:Target Device Pin:PDI 6 Pin Layout:
MISODATA1
ADCx 1VTARGET2
N/AN/A3
N/AN/A4
PORTx.y 2/RESETCLOCK5
GNDGND6
* - * 1 Optional, see \ref SSec_Options section - for USB AVRs with ADC modules only \n - * 2 See \ref SSec_Options section + * 1 When PDI_VIA_HARDWARE_USART is set, the AVR's Tx and Rx become the DATA line when connected together + * via a pair of 300 ohm resistors, and the AVR's XCK pin becomes CLOCK. * * \section SSec_Options Project Options * - * The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value. + * The following defines can be found in this project, which can control the project behaviour when defined, or changed in value. * * * @@ -115,22 +168,48 @@ * * * - * + * + * + * + * + * + * * * * * - * + * * * * * - * + * * * * * * * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * *
RESET_LINE_PORTMakefile CDEFSPORT register for the programmer's target RESET line.PORT register for the programmer's target RESET line. Ignored when compiled for the XPLAIN board.
RESET_LINE_PINMakefile CDEFSPIN register for the programmer's target RESET line. Ignored when compiled for the XPLAIN board.
RESET_LINE_DDRMakefile CDEFSDDR register for the programmer's target RESET line.DDR register for the programmer's target RESET line. Ignored when compiled for the XPLAIN board.
RESET_LINE_MASKMakefile CDEFSMask for the programmer's target RESET line on the chosen port. Must not be the AVR's /SS pin.Mask for the programmer's target RESET line on the chosen port. Must not be the AVR's /SS pin, as the + * target pins are tri-stated when not in use, and low signals on the /SS pin will force SPI slave mode when the + * pin is configured as an input. When in PDI programming mode, this is the target clock pin. + * Ignored when compiled for the XPLAIN board.
VTARGET_ADC_CHANNELMakefile CDEFSADC channel number (on supported AVRs) to use for VTARGET level detection.
ENABLE_ISP_PROTOCOLMakefile CDEFSDefine to enable SPI programming protocol support. Ignored when compiled for the XPLAIN board.
ENABLE_PDI_PROTOCOLMakefile CDEFSDefine to enable XMEGA PDI programming protocol support. Ignored when compiled for the XPLAIN board.
PDI_VIA_HARDWARE_USARTMakefile CDEFSDefine to force the PDI protocol (when enabled) to use the much faster hardware USART instead of bit-banging to + * match the official AVRISP pinout. This breaks pinout compatibility with the official AVRISP MKII (and requires + * seperate ISP and PDI programming headers) but increases programming speed dramatically. + * Ignored when compiled for the XPLAIN board.
*/