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33 * \brief LM3S1968 Synchronous Serial Interface (SSI) driver.
39 #include <cpu/power.h> /* cpu_relax() */
42 * LM3S1968 SSI frame format
45 #define SSI_FRF_MOTO_MODE_0 0x00000000 //< Moto fmt, polarity 0, phase 0
46 #define SSI_FRF_MOTO_MODE_1 0x00000002 //< Moto fmt, polarity 0, phase 1
47 #define SSI_FRF_MOTO_MODE_2 0x00000001 //< Moto fmt, polarity 1, phase 0
48 #define SSI_FRF_MOTO_MODE_3 0x00000003 //< Moto fmt, polarity 1, phase 1
49 #define SSI_FRF_TI 0x00000010 //< TI frame format
50 #define SSI_FRF_NMW 0x00000020 //< National MicroWire frame format
54 * LM3S1968 SSI operational mode
57 #define SSI_MODE_MASTER 0x00000000 //< SSI master
58 #define SSI_MODE_SLAVE 0x00000001 //< SSI slave
59 #define SSI_MODE_SLAVE_OD 0x00000002 //< SSI slave with output disabled
62 int lm3s_ssi_init(uint32_t base, uint32_t frame, int mode,
63 unsigned int bitrate, unsigned int data_width);
64 void lm3s_ssi_enable(uint32_t base);
65 void lm3s_ssi_disable(uint32_t base);
66 void lm3s_ssi_write_frame(uint32_t base, uint32_t val);
67 int lm3s_ssi_write_frame_nonblocking(uint32_t base, uint32_t val);
68 void lm3s_ssi_read_frame(uint32_t base, uint32_t *val);
69 int lm3s_ssi_read_frame_nonblocking(uint32_t base, uint32_t *val);
70 bool lm3s_ssi_txdone(uint32_t base);
72 INLINE void lm3s_ssi_wait_txdone(uint32_t base)
74 while (!lm3s_ssi_txdone(base))
78 #endif /* SSI_LM3S_H */