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AP_HAL: added clock_pulse() method to SPIDevice

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this is used by SPI SDCard interface for HAL_ChibiOS
This commit is contained in:
Andrew Tridgell 2018-05-26 18:43:23 +10:00
parent 52c8d3ed9f
commit d28283e302
1 changed files with 6 additions and 0 deletions
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6
libraries/AP_HAL/SPIDevice.h
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@ -45,6 +45,12 @@ public:
virtual bool transfer_fullduplex(const uint8_t *send, uint8_t *recv, virtual bool transfer_fullduplex(const uint8_t *send, uint8_t *recv,
uint32_t len) = 0; uint32_t len) = 0;
/*
* send N bytes of clock pulses without taking CS. This is used
* when initialising microSD interfaces over SPI
*/
virtual bool clock_pulse(uint32_t len) { return false; }
/* See Device::get_semaphore() */ /* See Device::get_semaphore() */
virtual Semaphore *get_semaphore() override = 0; virtual Semaphore *get_semaphore() override = 0;