altos/stm: Declare all SPI bus speeds

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

diff --git a/src/stm/ao_arch_funcs.h b/src/stm/ao_arch_funcs.h
index 3d8ca1f2a65e1a1e6751948c8e3e45181ac2ed0c..e66d20d72cbc568ca9c74e443fc5a7e5d7a96112 100644 (file)
--- a/src/stm/ao_arch_funcs.h
+++ b/src/stm/ao_arch_funcs.h
@@ -20,11 +20,49 @@
 
 /* ao_spi_stm.c
  */
-extern uint8_t ao_spi_mutex[STM_NUM_SPI];
 
-#define AO_SPI_SPEED_FAST      STM_SPI_CR1_BR_PCLK_4
+/* PCLK is set to 16MHz (HCLK 32MHz, APB prescaler 2) */
+
+#define AO_SPI_SPEED_8MHz      STM_SPI_CR1_BR_PCLK_2   /* This doesn't appear to work */
+#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_200kHz    STM_SPI_CR1_BR_PCLK_256
+#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_4MHz
+
+/* Companion bus wants something no faster than 200kHz */
+
+#define AO_SPI_SPEED_200kHz    AO_SPI_SPEED_125kHz
+
+#define AO_SPI_CONFIG_1                0x00
+#define AO_SPI_1_CONFIG_PA5_PA6_PA7    AO_SPI_CONFIG_1
+#define AO_SPI_2_CONFIG_PB13_PB14_PB15 AO_SPI_CONFIG_1
+
+#define AO_SPI_CONFIG_2                0x04
+#define AO_SPI_1_CONFIG_PB3_PB4_PB5    AO_SPI_CONFIG_2
+#define AO_SPI_2_CONFIG_PD1_PD3_PD4    AO_SPI_CONFIG_2
+
+#define AO_SPI_CONFIG_3                0x08
+#define AO_SPI_1_CONFIG_PE13_PE14_PE15 AO_SPI_CONFIG_3
+
+#define AO_SPI_CONFIG_NONE     0x0c
+
+#define AO_SPI_INDEX_MASK      0x01
+#define AO_SPI_CONFIG_MASK     0x0c
+
+#define AO_SPI_1_PA5_PA6_PA7   (STM_SPI_INDEX(1) | AO_SPI_1_CONFIG_PA5_PA6_PA7)
+#define AO_SPI_1_PB3_PB4_PB5   (STM_SPI_INDEX(1) | AO_SPI_1_CONFIG_PB3_PB4_PB5)
+#define AO_SPI_1_PE13_PE14_PE15        (STM_SPI_INDEX(1) | AO_SPI_1_CONFIG_PE13_PE14_PE15)
+
+#define AO_SPI_2_PB13_PB14_PB15        (STM_SPI_INDEX(2) | AO_SPI_2_CONFIG_PB13_PB14_PB15)
+#define AO_SPI_2_PD1_PD3_PD4   (STM_SPI_INDEX(2) | AO_SPI_2_CONFIG_PD1_PD3_PD4)
+
+#define AO_SPI_INDEX(id)       ((id) & AO_SPI_INDEX_MASK)
+#define AO_SPI_CONFIG(id)      ((id) & AO_SPI_CONFIG_MASK)
 
 void
 ao_spi_get(uint8_t spi_index, uint32_t speed);