git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@258 35acf78f-673a-0410-8e92-d51de3d6d3f4

4 files changed, 81 insertions, 25 deletions

diff --git a/demos/ARMCM3-STM32F103-GCC/Makefile b/demos/ARMCM3-STM32F103-GCC/Makefile
index 5b0e8f23e..7fc33886a 100644
--- a/demos/ARMCM3-STM32F103-GCC/Makefile
+++ b/demos/ARMCM3-STM32F103-GCC/Makefile
@@ -62,7 +62,7 @@ UDEFS =
 UADEFS =

 

 # List ARM-mode C source files here

-SRC = ../../ports/ARMCM3/chcore.c \

+SRC = ../../ports/ARMCM3/chcore.c ../../ports/ARMCM3/nvic.c \

       ../../src/chinit.c ../../src/chdebug.c ../../src/chlists.c ../../src/chdelta.c \

       ../../src/chschd.c ../../src/chthreads.c ../../src/chsem.c ../../src/chmtx.c \

       ../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c ../../src/chqueues.c \

diff --git a/demos/ARMCM3-STM32F103-GCC/board.c b/demos/ARMCM3-STM32F103-GCC/board.c
index 09636cb9d..631a13e0c 100644
--- a/demos/ARMCM3-STM32F103-GCC/board.c
+++ b/demos/ARMCM3-STM32F103-GCC/board.c
@@ -18,6 +18,7 @@
 */

 

 #include <ch.h>

+#include <nvic.h>

 

 #include "board.h"

 

@@ -45,27 +46,29 @@ void hwinit(void) {
    * Clocks and PLL initialization.

    */

   // HSI setup.

-  RCC->CR = 0x00000083;         // Enforces a known state (HSI ON).

-  while (!(RCC->CR & (1 << 1)))

+  RCC->CR = HSITRIM_RESET_BITS | CR_HSION_MASK;

+  while (!(RCC->CR & CR_HSIRDY_MASK))

     ;                           // Waits until HSI stable, it should already be.

   // HSE setup.

-  RCC->CR |= (1 << 16);         // HSE ON.

-  while (!(RCC->CR & (1 << 17)))

+  RCC->CR |= CR_HSEON_MASK;

+  while (!(RCC->CR & CR_HSERDY_MASK))

     ;                           // Waits until HSE stable.

   // PLL setup.

-  RCC->CFGR |= PLLPREBITS | PLLMULBITS | PLLSRCBITS;

-  RCC->CR |= (1 << 24);         // PLL ON.

-  while (!(RCC->CR & (1 << 25)))

+  RCC->CFGR = PLLSRC_HSE_BITS | PLLPREBITS | PLLMULBITS;

+  RCC->CR |= CR_PLLON_MASK;

+  while (!(RCC->CR & CR_PLLRDY_MASK))

     ;                           // Waits until PLL stable.

   // Clock sources.

-  RCC->CFGR |= AHBBITS | PPRE1BITS | PPRE2BITS | ADCPREBITS |

-               USBPREBITS | MCOSRCBITS;

+  RCC->CFGR |= HPRE_DIV1_BITS | PPRE1_DIV2_BITS | PPRE2_DIV2_BITS |

+               ADCPRE_DIV8_BITS | USBPREBITS | MCO_DISABLED_BITS;

 

   /*

    * Flash setup and final clock selection.

    */

   FLASH->ACR = FLASHBITS;       // Flash wait states depending on clock.

-  RCC->CFGR |= SYSSRCBITS;      // Switches on the PLL clock.

+  RCC->CFGR |= SW_PLL_BITS;     // Switches on the PLL clock.

+  while ((RCC->CFGR & CFGR_SWS_MASK) != SWS_PLL_BITS)

+    ;

 

   /*

    * I/O ports initialization as specified in board.h.

@@ -88,7 +91,15 @@ void hwinit(void) {
   GPIOD->ODR = VAL_GPIODODR;

 

   /*

-   * NVIC/SCB setup.

+   * NVIC/SCB initialization.

    */

-  SCB->AIRCR = (0x5FA << 16) | (0x5 << 8);      // PRIGROUP = 5 (2:6).

+  SCB_AIRCR = AIRCR_VECTKEY | AIRCR_PRIGROUP(0x3); // PRIGROUP 4:0 (4:4).

+

+  /*

+   * SysTick initialization.

+   */

+  SCB_SHPR(2) = 0x10 << 24;     // SysTick at priority 1:0 (highest - 1).

+  ST_RVR = SYSCLK / (8000000 / CH_FREQUENCY) - 1;

+  ST_CVR = 0;

+  ST_CSR = ENABLE_ON_BITS | TICKINT_ENABLED_BITS | CLKSOURCE_EXT_BITS;

 }

diff --git a/demos/ARMCM3-STM32F103-GCC/board.h b/demos/ARMCM3-STM32F103-GCC/board.h
index b06745010..fa47168ed 100644
--- a/demos/ARMCM3-STM32F103-GCC/board.h
+++ b/demos/ARMCM3-STM32F103-GCC/board.h
@@ -52,24 +52,69 @@
 #define AHB1CLK         (SYSCLK / 1)

 

 /*

- * Various clock settings.

+ * Values derived from clock settings.

  */

-#define SYSSRCBITS      (0x2 << 0)      // PLLCLK is SYSCLK (do not change)

-#define AHBBITS         (0x0 << 4)      // Divided by 1

-#define PPRE1BITS       (0x4 << 8)      // Divided by 2 (must be <= 36MHz)

-#define PPRE2BITS       (0x4 << 11)     // Divided by 2

-#define ADCPREBITS      (0x3 << 14)     // Divided by 8

-#define PLLSRCBITS      (0x1 << 16)     // PLL source is HSE/1

 #define PLLPREBITS      ((PLLPRE - 1) << 17)

 #define PLLMULBITS      ((PLLMUL - 2) << 18)

 #ifdef SYSCLK_48

-#define USBPREBITS      (0x1 << 22)     // Divided by 1

+#define USBPREBITS      USBPRE_DIV1_BITS

 #else

-#define USBPREBITS      (0x0 << 22)     // Divided by 1.5

+#define USBPREBITS      USBPRE_DIV1P5_BITS

 #endif

-#define MCOSRCBITS      (0x0 << 24)     // No MCO output.

 

+/*

+ * Definitions for RCC_CR register.

+ */

+#define CR_HSION_MASK           (0x1 << 0)

+#define CR_HSIRDY_MASK          (0x1 << 1)

+#define CR_HSITRIM_MASK         (0x1F << 3)

+#define   HSITRIM_RESET_BITS    (1 << 3)

+#define CR_HSICAL_MASK          (0xFF << 8)

+#define CR_HSEON_MASK           (0x1 << 16)

+#define CR_HSERDY_MASK          (0x1 << 17)

+#define CR_HSEBYP_MASK          (0x1 << 18)

+#define CR_CSSON_MASK           (0x1 << 19)

+#define CR_PLLON_MASK           (0x1 << 24)

+#define CR_PLLRDY_MASK          (0x1 << 25)

 

+/*

+ * Definitions for RCC_CFGR register.

+ */

+#define CFGR_SW_MASK            (0x3 << 0)

+#define   SW_HSI_BITS           (0 << 2)

+#define   SW_HSE_BITS           (1 << 2)

+#define   SW_PLL_BITS           (2 << 2)

+#define CFGR_SWS_MASK           (0x3 << 2)

+#define   SWS_HSI_BITS          (0 << 2)

+#define   SWS_HSE_BITS          (1 << 2)

+#define   SWS_PLL_BITS          (2 << 2)

+#define CFGR_HPRE_MASK          (0xF << 4)

+#define    HPRE_DIV1_BITS       (0 << 4)

+#define CFGR_PPRE1_MASK         (0x7 << 8)

+#define   PPRE1_DIV1_BITS       (0 << 8)

+#define   PPRE1_DIV2_BITS       (4 << 8)

+#define CFGR_PPRE2_MASK         (0x7 << 11)

+#define   PPRE2_DIV1_BITS       (0 << 11)

+#define   PPRE2_DIV2_BITS       (4 << 11)

+#define CFGR_ADCPRE_MASK        (0x3 << 14)

+#define   ADCPRE_DIV2_BITS      (0 << 14)

+#define   ADCPRE_DIV4_BITS      (1 << 14)

+#define   ADCPRE_DIV6_BITS      (2 << 14)

+#define   ADCPRE_DIV8_BITS      (3 << 14)

+#define CFGR_PLLSRC_MASK        (0x1 << 16)

+#define   PLLSRC_HSI_BITS       (0 << 16)

+#define   PLLSRC_HSE_BITS       (1 << 16)

+#define CFGR_PLLXTPRE_MASK      (0x1 << 17)

+#define CFGR_PLLMUL_MASK        (0xF << 18)

+#define CFGR_USBPRE_MASK        (0x1 << 22)

+#define   USBPRE_DIV1P5_BITS    (0 << 22)

+#define   USBPRE_DIV1_BITS      (1 << 22)

+#define CFGR_MCO_MASK           (0x7 << 24)

+#define   MCO_DISABLED_BITS     (0 << 24)

+

+/*

+ * IO pins assignments.

+ */

 #define GPIOA_BUTTON    (1 << 0)

 

 #define GPIOC_MMCWP     (1 << 6)

diff --git a/demos/ARMCM3-STM32F103-GCC/stm32lib/stm32f10x_conf.h b/demos/ARMCM3-STM32F103-GCC/stm32lib/stm32f10x_conf.h
index 8e51a48fd..7df30d90d 100644
--- a/demos/ARMCM3-STM32F103-GCC/stm32lib/stm32f10x_conf.h
+++ b/demos/ARMCM3-STM32F103-GCC/stm32lib/stm32f10x_conf.h
@@ -77,7 +77,7 @@
 //#define _IWDG

 

 /************************************* NVIC ***********************************/

-#define _NVIC

+//#define _NVIC

 

 /************************************* PWR ************************************/

 //#define _PWR

@@ -94,7 +94,7 @@
 //#define _SPI2

 

 /************************************* SysTick ********************************/

-#define _SysTick

+//#define _SysTick

 

 /************************************* TIM1 ***********************************/

 //#define _TIM1