altos/lpc: Declare SPI send parameters as const

[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 0891903ea5f00cb2adae5dbf57506fcdcb81a5c5..ff8a184d28198252bbff6787456d9cb9491f9fee 100644 (file)
--- a/src/lpc/ao_arch_funcs.h
+++ b/src/lpc/ao_arch_funcs.h
@@ -161,16 +161,17 @@ static inline void ao_arch_restore_stack(void) {
 
 #endif /* HAS_TASK */
 
-#define ao_arch_wait_interrupt() do {                  \
-               asm(".global ao_idle_loc\n\twfi\nao_idle_loc:");        \
-               ao_arch_release_interrupts();                           \
-               ao_arch_block_interrupts();                             \
+#define ao_arch_wait_interrupt() do {                          \
+               asm("\twfi\n");                                 \
+               ao_arch_release_interrupts();                   \
+               asm(".global ao_idle_loc\n\nao_idle_loc:");     \
+               ao_arch_block_interrupts();                     \
        } while (0)
 
-#define ao_arch_critical(b) do {                               \
-               ao_arch_block_interrupts();                     \
-               do { b } while (0);                             \
-               ao_arch_release_interrupts();                   \
+#define ao_arch_critical(b) do {                       \
+               uint32_t __mask = ao_arch_irqsave();    \
+               do { b } while (0);                     \
+               ao_arch_irqrestore(__mask);             \
        } while (0)
 
 /*
@@ -200,7 +201,7 @@ void
 ao_spi_put(uint8_t spi_index);
 
 void
-ao_spi_send(void *block, uint16_t len, uint8_t spi_index);
+ao_spi_send(const void *block, uint16_t len, uint8_t spi_index);
 
 void
 ao_spi_send_fixed(uint8_t value, uint16_t len, uint8_t spi_index);
@@ -209,7 +210,7 @@ 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);
+ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index);
 
 extern uint16_t        ao_spi_speed[LPC_NUM_SPI];