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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega165 датащи(PDF) 141 Page - ATMEL Corporation |
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ATmega165 датащи(HTML) 141 Page - ATMEL Corporation |
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141 / 336 page  141 ATmega165/V 2573G–AVR–07/09 When the SPI is enabled, the data direction of the MOSI, MISO, SCK, and SS pins is overridden according to Table 59. For more details on automatic port overrides, refer to “Alternate Port Functions” on page 60. Note: 1. See “Alternate Functions of Port B” on page 62 for a detailed description of how to define the direction of the user defined SPI pins. The following code examples show how to initialize the SPI as a Master and how to per- form a simple transmission. DDR_SPI in the examples must be replaced by the actual Data Direction Register controlling the SPI pins. DD_MOSI, DD_MISO and DD_SCK must be replaced by the actual data direction bits for these pins. E.g. if MOSI is placed on pin PB5, replace DD_MOSI with DDB5 and DDR_SPI with DDRB. Table 59. SPI Pin Overrides (1) Pin Direction, Master SPI Direction, Slave SPI MOSI User Defined Input MISO Input User Defined SCK User Defined Input SS User Defined Input |
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