spi 1.0
AVR mega series spi library
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spi.h
Go to the documentation of this file.
1
19
20#ifndef SPI_H_
21#define SPI_H_
22
23 #ifndef SPI2X_ENABLE
33 //#define SPI2X_ENABLE
34
35 #ifdef _DOXYGEN_ // Used for documentation, can be ignored
36 #define SPI2X_ENABLE
37 #endif
38 #endif
39
40 #ifndef SPI_CLOCK
61 #define SPI_CLOCK 0x00
62 #endif
63
64 #ifndef SPI_DDR
76 #define SPI_DDR DDRB
77 #endif
78
79 #ifndef SPI_PORT
91 #define SPI_PORT PORTB
92 #endif
93
94 #ifndef SPI_MOSI
104 #define SPI_MOSI PINB5
105 #endif
106
107 #ifndef SPI_MISO
117 #define SPI_MISO PINB6
118 #endif
119
120 #ifndef SPI_SCK
130 #define SPI_SCK PINB7
131 #endif
132
133 #ifndef SPI_MULTISLAVE
143 // #define SPI_MULTISLAVE
144 #endif
145
146 #ifndef SPI_MULTISLAVE
147 #ifndef SPI_SS
148
158 #define SPI_SS PINB4
159
160 #ifndef SPI_ENABLE_MASTER_ABORT
172 #define SPI_ENABLE_MASTER_ABORT
173 #endif
174 #endif
175 #endif
176
177 #ifndef SPI_SPIE
187 // #define SPI_SPIE
188 #endif
189
190 #include <avr/io.h>
191 #include "../../common/enums/SPI_enums.h"
192
193 SPI_Status spi_init(SPI_Direction direction, SPI_Polarity setup, SPI_Phase sample);
194 void spi_disable(void);
195
196 #ifndef SPI_MULTISLAVE
197 void spi_select(SPI_Select mode);
198 #else
199 void spi_select(unsigned char node, SPI_Select mode);
200 #endif
201
202 #ifndef SPI_SPIE
203 unsigned char spi_transfer(unsigned char data);
204 #endif
205
206#endif /* SPI_H_ */
SPI_enums.h
Enumerations for SPI interface configurations and status.
SPI_Status
enum SPI_Status_t SPI_Status
Alias for enum SPI_Status_t representing SPI communication status codes.
Definition SPI_enums.h:110
SPI_Direction
enum SPI_Direction_t SPI_Direction
Alias for enum SPI_Direction_t representing SPI bit order options.
Definition SPI_enums.h:41
SPI_Select
enum SPI_Select_t SPI_Select
Alias for enum SPI_Select_t representing SPI enable states.
Definition SPI_enums.h:86
SPI_Phase
enum SPI_Edge_t SPI_Phase
Alias for enum SPI_Edge_t representing the clock phase edge.
Definition SPI_enums.h:67
SPI_Polarity
enum SPI_Edge_t SPI_Polarity
Alias for enum SPI_Edge_t representing the clock polarity edge.
Definition SPI_enums.h:62
spi_transfer
unsigned char spi_transfer(unsigned char data)
Transfer a single byte of data over the SPI bus.
Definition spi.c:160
spi_disable
void spi_disable(void)
Disable the SPI hardware interface and reset related pins.
Definition spi.c:113
spi_init
SPI_Status spi_init(SPI_Direction direction, SPI_Polarity setup, SPI_Phase sample)
Initialize the SPI hardware interface in master mode with specified configuration.
Definition spi.c:48
spi_select
void spi_select(SPI_Select mode)
Control the SPI Slave Select (SS) pin to enable or disable the SPI slave device.
Definition spi.c:138