* * $Log: sbbif0.h,v $ * Revision 1.1 2007/04/12 09:07:54 haraldkipp * Configurable SPI added. * * *
Definition in file sbbif0.h.
Go to the source code of this file.
Defines | |
#define | SBBI0_MAX_DEVICES 4 |
Maximum number of devices (chip selects). | |
#define | SBBI0_CS0_ENA() |
#define | SBBI0_CS0_CLR() |
#define | SBBI0_CS0_SET() |
#define | SBBI0_CS1_ENA() |
#define | SBBI0_CS1_CLR() |
#define | SBBI0_CS1_SET() |
#define | SBBI0_CS2_ENA() |
#define | SBBI0_CS2_CLR() |
#define | SBBI0_CS2_SET() |
#define | SBBI0_CS3_ENA() |
#define | SBBI0_CS3_CLR() |
#define | SBBI0_CS3_SET() |
#define | SBBI0_RST0_ENA() |
#define | SBBI0_RST0_CLR() |
#define | SBBI0_RST0_SET() |
#define | SBBI0_RST1_ENA() |
#define | SBBI0_RST1_CLR() |
#define | SBBI0_RST1_SET() |
#define | SBBI0_RST2_ENA() |
#define | SBBI0_RST2_CLR() |
#define | SBBI0_RST2_SET() |
#define | SBBI0_RST3_ENA() |
#define | SBBI0_RST3_CLR() |
#define | SBBI0_RST3_SET() |
#define | SBBI0_SCK_ENA() |
#define | SBBI0_SCK_CLR() |
#define | SBBI0_SCK_SET() |
#define | SBBI0_MOSI_ENA() |
#define | SBBI0_MOSI_CLR() |
#define | SBBI0_MOSI_SET() |
#define | SBBI0_MISO_ENA() |
#define | SBBI0_MISO_TST() 0 |
#define | SBBI0_INIT() |
Functions | |
int | Sbbi0SetMode (ureg_t ix, ureg_t mode) |
Set mode for a given device at SPI0. | |
void | Sbbi0SetSpeed (ureg_t ix, u_long rate) |
Set transfer rate for a given device at SPI0. | |
void | Sbbi0Enable (ureg_t ix) |
Enable the serial peripheral interface 0. | |
void | Sbbi0ChipReset (ureg_t ix, ureg_t hi) |
Set or clear a configured reset line for a given device. | |
void | Sbbi0ChipSelect (ureg_t ix, ureg_t hi) |
Set or clear a configured chip select for a given device. | |
void | Sbbi0SelectDevice (ureg_t ix) |
Select the device at a given chip select. | |
void | Sbbi0DeselectDevice (ureg_t ix) |
Deselect the device at a given chip select. | |
void | Sbbi0NegSelectDevice (ureg_t ix) |
Select the device at a given negated chip select. | |
void | Sbbi0NegDeselectDevice (ureg_t ix) |
Deselect the device at a given negated chip select. | |
u_char | Sbbi0Byte (u_char data) |
Exchange a byte with the currently selected SPI device. | |
void | Sbbi0Transact (CONST void *wdata, void *rdata, size_t len) |
Exchange a specified number of bytes with the currently selected SPI device. |
#define SBBI0_MAX_DEVICES 4 |
Maximum number of devices (chip selects).
Definition at line 55 of file sbbif0.h.
Referenced by Sbbi0SetMode().
#define SBBI0_CS0_ENA | ( | ) |
#define SBBI0_CS0_CLR | ( | ) |
#define SBBI0_CS0_SET | ( | ) |
#define SBBI0_CS1_ENA | ( | ) |
#define SBBI0_CS1_CLR | ( | ) |
#define SBBI0_CS1_SET | ( | ) |
#define SBBI0_CS2_ENA | ( | ) |
#define SBBI0_CS2_CLR | ( | ) |
#define SBBI0_CS2_SET | ( | ) |
#define SBBI0_CS3_ENA | ( | ) |
#define SBBI0_CS3_CLR | ( | ) |
#define SBBI0_CS3_SET | ( | ) |
#define SBBI0_RST0_ENA | ( | ) |
#define SBBI0_RST0_CLR | ( | ) |
#define SBBI0_RST0_SET | ( | ) |
#define SBBI0_RST1_ENA | ( | ) |
#define SBBI0_RST1_CLR | ( | ) |
#define SBBI0_RST1_SET | ( | ) |
#define SBBI0_RST2_ENA | ( | ) |
#define SBBI0_RST2_CLR | ( | ) |
#define SBBI0_RST2_SET | ( | ) |
#define SBBI0_RST3_ENA | ( | ) |
#define SBBI0_RST3_CLR | ( | ) |
#define SBBI0_RST3_SET | ( | ) |
#define SBBI0_SCK_ENA | ( | ) |
#define SBBI0_SCK_CLR | ( | ) |
#define SBBI0_SCK_SET | ( | ) |
#define SBBI0_MOSI_ENA | ( | ) |
#define SBBI0_MOSI_CLR | ( | ) |
#define SBBI0_MOSI_SET | ( | ) |
#define SBBI0_MISO_ENA | ( | ) |
#define SBBI0_MISO_TST | ( | ) | 0 |
#define SBBI0_INIT | ( | ) |
Value:
{ \ SBBI0_SCK_CLR(); \ SBBI0_SCK_ENA(); \ SBBI0_MOSI_CLR(); \ SBBI0_MOSI_ENA(); \ SBBI0_MISO_ENA(); \ }
int Sbbi0SetMode | ( | ureg_t | ix, | |
ureg_t | mode | |||
) |
Set mode for a given device at SPI0.
This is typically the first call in order to use the device. It will not directly enable the SPI hardware. This is done when selecting the device.
ix | The device index, starting at 0. | |
mode | The mode to set.
|
void Sbbi0SetSpeed | ( | ureg_t | ix, | |
u_long | rate | |||
) |
void Sbbi0Enable | ( | ureg_t | ix | ) |
Enable the serial peripheral interface 0.
Enables SPI with the parameters previously set by Sbbi0SetMode().
ix | The device index, starting at 0. The routine will not check if this is valid. |
Definition at line 128 of file sbbif0.c.
Referenced by Sbbi0NegSelectDevice(), and Sbbi0SelectDevice().
void Sbbi0ChipReset | ( | ureg_t | ix, | |
ureg_t | hi | |||
) |
Set or clear a configured reset line for a given device.
Reset lines must be configured when building the system libraries. This routine silently ignores them, if not configured.
ix | The device index, starting at 0. | |
hi | If 0, the reset line is driven low. Otherwise the line is driven high. |
void Sbbi0ChipSelect | ( | ureg_t | ix, | |
ureg_t | hi | |||
) |
Set or clear a configured chip select for a given device.
Chip selects must be configured when building the system libraries. This routine silently ignores selects, if they are not configured.
ix | The device index, starting at 0. Same as the chip select number. | |
hi | If 0, the chip select is driven low. Otherwise the line is driven high. |
Definition at line 210 of file sbbif0.c.
Referenced by Sbbi0DeselectDevice(), Sbbi0NegDeselectDevice(), Sbbi0NegSelectDevice(), and Sbbi0SelectDevice().
void Sbbi0SelectDevice | ( | ureg_t | ix | ) |
Select the device at a given chip select.
Enables the serial peripheral interface with the parameters previously set for the given device by Sbbi0SetMode() and Sbbi0SetSpeed(). Then the configured chip select line is driven high.
ix | The device index, starting at 0. The routine will not check if this is a valid number. |
void Sbbi0DeselectDevice | ( | ureg_t | ix | ) |
void Sbbi0NegSelectDevice | ( | ureg_t | ix | ) |
Select the device at a given negated chip select.
Enables the serial peripheral interface with the parameters previously set for the given device by Sbbi0SetMode() and Sbbi0SetSpeed(). Then the configured chip select line is driven low.
ix | The device index, starting at 0. The routine will not check if this is a valid number. |
void Sbbi0NegDeselectDevice | ( | ureg_t | ix | ) |
Exchange a byte with the currently selected SPI device.
data | Byte to transmit. |
Definition at line 321 of file sbbif0.c.
Referenced by Sbbi0Transact().
void Sbbi0Transact | ( | CONST void * | wdata, | |
void * | rdata, | |||
size_t | len | |||
) |
Exchange a specified number of bytes with the currently selected SPI device.
It is assumed, that the serial peripheral interface has been properly initialized by calling Sbbi0SetMode() and optionally Sbbi0SetSpeed().
Further it is assumed, that the chip select (if there is one) had been enabled by a previous call to Sbbi0SelectDevice() or Sbbi0NegSelectDevice().
wdata | Pointer to the data to transmit. | |
rdata | Pointer to a buffer that receives the data from the device. Can be set to NULL for transmit only. May also point to the tranmit buffer, in which case the transmitted bytes are replaced by the bytes received. |