mirror of https://github.com/rusefi/rusefi-1.git
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*
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* @file mcp3208.h
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*
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* @date Aug 12, 2013
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* @author Andrey Belomutskiy, (c) 2012-2014
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*
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*
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* MCP3208 pins:
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* pin10 CS Chip Select
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* pin11 Din Data In (MOSI)
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* pin12 Dout Data Out (MISO)
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* pin13 CLK spi CLoCk
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*
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*/
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#ifndef MCP3208_H_
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#define MCP3208_H_
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#define MCP3208_CS_PORT GPIOD
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#define MCP3208_CS_PIN 11
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/**
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* @brief MCP3208 ADC chip driver structure
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*/
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typedef struct {
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SPIDriver *driver;
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unsigned char tx_buff[3];
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unsigned char rx_buff[3];
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int requestedChannel;
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int results[8];
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} McpAdcState;
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void init_adc_mcp3208(McpAdcState *state, SPIDriver *driver);
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void requestAdcValue(McpAdcState *state, int channel);
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void requestAdcValueI(McpAdcState *state, int channel);
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void adc_in_out(McpAdcState *state);
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int getMcp3208adc(int channel);
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// Peripherial Clock 84MHz SPI1 SPI1 SPI2/3
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// Peripherial Clock 42MHz SPI2 SPI3
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#define SPI_BaudRatePrescaler_2 ((uint16_t)0x0000) // 42 MHz 21 MHZ
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#define SPI_BaudRatePrescaler_4 ((uint16_t)0x0008) // 21 MHz 10.5 MHz
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#define SPI_BaudRatePrescaler_8 ((uint16_t)0x0010) // 10.5 MHz 5.25 MHz
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#define SPI_BaudRatePrescaler_16 ((uint16_t)0x0018) // 5.25 MHz 2.626 MHz
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#define SPI_BaudRatePrescaler_32 ((uint16_t)0x0020) // 2.626 MHz 1.3125 MHz
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#define SPI_BaudRatePrescaler_64 ((uint16_t)0x0028) // 1.3125 MHz 656.25 KHz
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#define SPI_BaudRatePrescaler_128 ((uint16_t)0x0030) // 656.25 KHz 328.125 KHz
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#define SPI_BaudRatePrescaler_256 ((uint16_t)0x0038) // 328.125 KHz 164.06 KHz
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#endif /* MCP3208_H_ */
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