X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstm%2Fao_arch_funcs.h;h=083f7a2beb7ad394e57c200d9b1f13dd2ff5f020;hb=a6baf04bae3fe6a6b3da2f456419732ffeb4d056;hp=ad46ef32babf9fd52b0f9d58f08fd09e6f534275;hpb=d6c3c3618a708d2a1a7948454710e6ae21c2a426;p=fw%2Faltos

diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index ad46ef32..083f7a2b 100644
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -24,20 +24,26 @@
 
 /* PCLK is set to 16MHz (HCLK 32MHz, APB prescaler 2) */
 
-#define AO_SPI_SPEED_8MHz	STM_SPI_CR1_BR_PCLK_2
-#define AO_SPI_SPEED_4MHz	STM_SPI_CR1_BR_PCLK_4
-#define AO_SPI_SPEED_2MHz	STM_SPI_CR1_BR_PCLK_8
-#define AO_SPI_SPEED_1MHz	STM_SPI_CR1_BR_PCLK_16
-#define AO_SPI_SPEED_500kHz	STM_SPI_CR1_BR_PCLK_32
-#define AO_SPI_SPEED_250kHz	STM_SPI_CR1_BR_PCLK_64
-#define AO_SPI_SPEED_125kHz	STM_SPI_CR1_BR_PCLK_128
-#define AO_SPI_SPEED_62500Hz	STM_SPI_CR1_BR_PCLK_256
+//#define AO_SPI_SPEED_8MHz	STM_SPI_CR1_BR_PCLK_2	/* too fast to use safely */
+#define _AO_SPI_SPEED_4MHz	STM_SPI_CR1_BR_PCLK_4
+#define _AO_SPI_SPEED_2MHz	STM_SPI_CR1_BR_PCLK_8
+#define _AO_SPI_SPEED_1MHz	STM_SPI_CR1_BR_PCLK_16
+#define _AO_SPI_SPEED_500kHz	STM_SPI_CR1_BR_PCLK_32
+#define _AO_SPI_SPEED_250kHz	STM_SPI_CR1_BR_PCLK_64
+#define _AO_SPI_SPEED_125kHz	STM_SPI_CR1_BR_PCLK_128
+#define _AO_SPI_SPEED_62500Hz	STM_SPI_CR1_BR_PCLK_256
 
-#define AO_SPI_SPEED_FAST	AO_SPI_SPEED_8MHz
-
-/* Companion bus wants something no faster than 200kHz */
-
-#define AO_SPI_SPEED_200kHz	AO_SPI_SPEED_125kHz
+static inline uint32_t
+ao_spi_speed(uint32_t hz)
+{
+	if (hz >= 4000000) return _AO_SPI_SPEED_4MHz;
+	if (hz >= 2000000) return _AO_SPI_SPEED_2MHz;
+	if (hz >= 1000000) return _AO_SPI_SPEED_1MHz;
+	if (hz >=  500000) return _AO_SPI_SPEED_500kHz;
+	if (hz >=  250000) return _AO_SPI_SPEED_250kHz;
+	if (hz >=  125000) return _AO_SPI_SPEED_125kHz;
+	return _AO_SPI_SPEED_62500Hz;
+}
 
 #define AO_SPI_CPOL_BIT		4
 #define AO_SPI_CPHA_BIT		5
@@ -151,8 +157,6 @@ ao_spi_recv(void *block, uint16_t len, uint8_t spi_index);
 void
 ao_spi_duplex(const void *out, void *in, uint16_t len, uint8_t spi_index);
 
-extern uint16_t	ao_spi_speed[STM_NUM_SPI];
-
 void
 ao_spi_init(void);
 
@@ -473,9 +477,8 @@ ao_arch_irq_check(void) {
 
 #if HAS_TASK
 static inline void
-ao_arch_init_stack(struct ao_task *task, void *start)
+ao_arch_init_stack(struct ao_task *task, uint32_t *sp, void *start)
 {
-	uint32_t	*sp = &task->stack32[AO_STACK_SIZE>>2];
 	uint32_t	a = (uint32_t) start;
 	int		i;
 
@@ -559,8 +562,8 @@ ao_validate_cur_stack(void)
 
 	asm("mrs %0,psp" : "=&r" (psp));
 	if (ao_cur_task &&
-	    psp <= ao_cur_task->stack &&
-	    psp >= ao_cur_task->stack - 256)
+	    (psp <= ao_cur_task->stack8 ||
+	     psp >= ao_cur_task->stack8 + AO_STACK_SIZE))
 		ao_panic(AO_PANIC_STACK);
 }
 #endif