altos: Add LPC spi driver

[fw/altos] / src / lpc / ao_arch_funcs.h

diff --git a/src/lpc/ao_arch_funcs.h b/src/lpc/ao_arch_funcs.h
index 96ae0366f85bee03eb9caa0a5bf8718ade483975..94d876f6676f9eb4084849ed3df81028183651fa 100644 (file)
--- a/src/lpc/ao_arch_funcs.h
+++ b/src/lpc/ao_arch_funcs.h
@@ -144,4 +144,55 @@ static inline void ao_arch_restore_stack(void) {
                ao_arch_release_interrupts();                   \
        } while (0)
 
+/*
+ * SPI
+ */
+
+#define ao_spi_set_cs(port,mask) (lpc_gpio.clr[port] = (mask))
+#define ao_spi_clr_cs(port,mask) (lpc_gpio.set[port] = (mask))
+
+#define ao_spi_get_mask(port,mask,bus,speed) do {      \
+               ao_spi_get(bus, speed);                 \
+               ao_spi_set_cs(port, mask);              \
+       } while (0)
+
+#define ao_spi_put_mask(reg,mask,bus) do {     \
+               ao_spi_clr_cs(reg,mask);        \
+               ao_spi_put(bus);                \
+       } while (0)
+
+#define ao_spi_get_bit(reg,bit,pin,bus,speed) ao_spi_get_mask(reg,(1<<bit),bus,speed)
+#define ao_spi_put_bit(reg,bit,pin,bus) ao_spi_put_mask(reg,(1<<bit),bus)
+
+void
+ao_spi_get(uint8_t spi_index, uint32_t speed);
+
+void
+ao_spi_put(uint8_t spi_index);
+
+void
+ao_spi_send(void *block, uint16_t len, uint8_t spi_index);
+
+void
+ao_spi_send_fixed(uint8_t value, uint16_t len, uint8_t spi_index);
+
+void
+ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
+
+void
+ao_spi_duplex(void *out, void *in, uint16_t len, uint8_t spi_index);
+
+extern uint16_t        ao_spi_speed[LPC_NUM_SPI];
+
+void
+ao_spi_init(void);
+
+#define ao_spi_init_cs(port, mask) do {                                        \
+               uint8_t __bit__;                                        \
+               for (__bit__ = 0; __bit__ < 32; __bit__++) {            \
+                       if (mask & (1 << __bit__))                      \
+                               ao_enable_output(port, __bit__, PIN, 1); \
+               }                                                       \
+       } while (0)
+
 #endif /* _AO_ARCH_FUNCS_H_ */