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);
void
ao_spi_send_sync(void *block, uint16_t len, uint8_t spi_index);
+static inline void
+ao_spi_send_byte(uint8_t byte, uint8_t spi_index)
+{
+ struct stm_spi *stm_spi;
+
+ switch (AO_SPI_INDEX(spi_index)) {
+ case 0:
+ stm_spi = &stm_spi1;
+ break;
+ case 1:
+ stm_spi = &stm_spi2;
+ break;
+ }
+
+ stm_spi->cr2 = ((0 << STM_SPI_CR2_TXEIE) |
+ (0 << STM_SPI_CR2_RXNEIE) |
+ (0 << STM_SPI_CR2_ERRIE) |
+ (0 << STM_SPI_CR2_SSOE) |
+ (0 << STM_SPI_CR2_TXDMAEN) |
+ (0 << STM_SPI_CR2_RXDMAEN));
+
+ /* Clear RXNE */
+ (void) stm_spi->dr;
+
+ while (!(stm_spi->sr & (1 << STM_SPI_SR_TXE)));
+ stm_spi->dr = byte;
+}
+
void
ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
#define ao_gpio_get(port, bit, pin) stm_gpio_get(port, bit)
+#define ao_gpio_set_bits(port, bits) stm_gpio_set_bits(port, bits)
+
+#define ao_gpio_clr_bits(port, bits) stm_gpio_clr_bits(port, bits);
+
+
#define ao_enable_output(port,bit,pin,v) do { \
ao_enable_port(port); \
ao_gpio_set(port, bit, pin, v); \
static inline void ao_arch_restore_stack(void) {
uint32_t sp;
+ uint32_t control;
+
+ asm("mrs %0,control" : "=&r" (control));
+ control |= (1 << 1);
+ asm("msr control,%0" : : "r" (control));
+ asm("isb");
+
sp = (uint32_t) ao_cur_task->sp;
/* Switch stacks */
#define HAS_SAMPLE_PROFILE 0
#endif
+#if DEBUG
+#define HAS_ARCH_VALIDATE_CUR_STACK 1
+
+static inline void
+ao_validate_cur_stack(void)
+{
+ uint8_t *psp;
+
+ asm("mrs %0,psp" : "=&r" (psp));
+ if (ao_cur_task &&
+ psp <= ao_cur_task->stack &&
+ psp >= ao_cur_task->stack - 256)
+ ao_panic(AO_PANIC_STACK);
+}
+#endif
+
#if !HAS_SAMPLE_PROFILE
#define HAS_ARCH_START_SCHEDULER 1
}
#endif
-#define ao_arch_isr_stack()
+static inline void ao_arch_isr_stack(void) {
+ uint32_t control;
+
+ asm("mrs %0,control" : "=&r" (control));
+ control &= ~(1 << 1);
+ asm("msr control,%0" : : "r" (control));
+ asm("isb");
+}
#endif