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AP_HAL: added an optional spi.set_bus_speed() API

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this will be used by MPU6000 on APM2 to change speed after init
This commit is contained in:
Andrew Tridgell 2013-10-11 18:00:23 +11:00 committed by Randy Mackay
parent 4dc2f4bd58
commit 5ccf8409b4
1 changed files with 14 additions and 0 deletions
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14
libraries/AP_HAL/SPIDriver.h
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@ -26,6 +26,20 @@ public:
virtual void cs_release() = 0; virtual void cs_release() = 0;
virtual uint8_t transfer (uint8_t data) = 0; virtual uint8_t transfer (uint8_t data) = 0;
virtual void transfer (const uint8_t *data, uint16_t len) = 0; virtual void transfer (const uint8_t *data, uint16_t len) = 0;
/**
optional set_bus_speed() interface. This can be used by drivers
to request higher speed for sensor registers once the sensor is
initialised. This is used by the MPU6000 driver which can
handle 20MHz for sensor register reads, but only 1MHz for other
registers.
*/
enum bus_speed {
SPI_SPEED_LOW, SPI_SPEED_HIGH
};
virtual void set_bus_speed(enum bus_speed speed) {}
}; };
#endif // __AP_HAL_SPI_DRIVER_H__ #endif // __AP_HAL_SPI_DRIVER_H__