#define AO_STACK_SIZE 1024
+#define AO_LED_TYPE uint16_t
+
/* Various definitions to make GCC look more like SDCC */
#define ao_arch_naked_declare __attribute__((naked))
uint32_t a = (uint32_t) start; \
int i; \
\
+ /* APSR */ \
+ ARM_PUSH32(sp, 0); \
+ \
+ /* PRIMASK with interrupts enabled */ \
+ ARM_PUSH32(sp, 0); \
+ \
/* Return address (goes into LR) */ \
ARM_PUSH32(sp, a); \
\
- /* Clear register values */ \
+ /* Clear register values r0-r12 */ \
i = 13; \
while (i--) \
ARM_PUSH32(sp, 0); \
\
- /* APSR */ \
- ARM_PUSH32(sp, 0); \
task->sp = sp; \
} while (0);
-#define ao_arch_save_regs() do { \
+#define ao_arch_save_regs() do { \
+ uint32_t apsr; \
+ uint32_t primask; \
+ \
+ /* Save APSR */ \
+ asm("mrs %0,apsr" : "=&r" (apsr)); \
+ asm("push {%0}" : : "r" (apsr)); \
+ \
+ /* Save PRIMASK */ \
+ asm("mrs %0,primask" : "=&r" (primask)); \
+ asm("push {%0}" : : "r" (primask)); \
+ \
+ /* Save general registers */ \
asm("push {r0-r12,lr}\n"); \
- cli(); \
- asm("mrs r0,apsr" "\n\t" "push {r0}"); \
- sei(); \
} while (0)
#define ao_arch_save_stack() do { \
- uint32_t sp; \
+ uint32_t *sp; \
asm("mov %0,sp" : "=&r" (sp) ); \
- ao_cur_task->sp = (uint32_t *) (sp); \
- if ((uint8_t *) ao_cur_task->sp < ao_cur_task->stack) \
+ ao_cur_task->sp = (sp); \
+ if ((uint8_t *) sp < ao_cur_task->stack) \
ao_panic (AO_PANIC_STACK); \
} while (0)
#define ao_arch_restore_stack() do { \
uint32_t sp; \
+ uint32_t primask; \
+ uint32_t apsr; \
sp = (uint32_t) ao_cur_task->sp; \
- cli(); \
+ \
+ /* Switch stacks */ \
asm("mov sp, %0" : : "r" (sp) ); \
- asm("pop {r0}" "\n\t" "msr apsr,r0"); \
+ \
+ /* Restore general registers */ \
asm("pop {r0-r12,lr}\n"); \
+ \
+ /* Restore PRIMASK */ \
+ asm("pop {%0}" : "=&r" (primask) ); \
+ asm("msr primask,%0" : : "r" (primask) ); \
+ \
+ /* Restore APSR */ \
+ asm("pop {%0}" : "=&r" (apsr) ); \
+ asm("msr apsr,%0" : : "r" (apsr) ); \
+ \
+ /* Return to calling function */ \
asm("bx lr"); \
} while(0)
*/
#define STM_APB1 (16000000 * 6 / 4)
+void ao_lcd_stm_init(void);
+
+void ao_lcd_font_init(void);
+
+void ao_lcd_font_string(char *s);
+
+#define USE_SERIAL_STDIN (USE_SERIAL_1_STDIN + USE_SERIAL_2_STDIN + USE_SERIAL_3_STDIN)
+
+char
+ao_serial1_getchar(void);
+
+void
+ao_serial1_putchar(char c);
+
+char
+ao_serial1_pollchar(void);
+
+void
+ao_serial1_set_speed(uint8_t speed);
+
+char
+ao_serial2_getchar(void);
+
+void
+ao_serial2_putchar(char c);
+
+char
+ao_serial2_pollchar(void);
+
+void
+ao_serial2_set_speed(uint8_t speed);
+
+char
+ao_serial3_getchar(void);
+
+void
+ao_serial3_putchar(char c);
+
+char
+ao_serial3_pollchar(void);
+
+void
+ao_serial3_set_speed(uint8_t speed);
+
#endif /* _AO_ARCH_H_ */