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Changes to RCC HSI and FLASH driver 

STM32F4 does not require the HSI to erase or program FLASH
   The HSI needs to be left on until a new clock source is chosen.
   (we leave it on all the time)
This commit is contained in:
David Sidrane 2017-01-11 12:51:58 -10:00 committed by Lorenz Meier
parent 751909cd4e
commit ae946be046
1 changed files with 67 additions and 0 deletions
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67
nuttx-patches/wip_inflight_to_upstream.patch
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@ -33,3 +33,70 @@ index 644c810..10919e8 100644
struct up_dev_s *priv = (struct up_dev_s *)dev->priv;
#endif
int ret = OK;
diff --git NuttX/nuttx/arch/arm/src/stm32/stm32f40xxx_rcc.c NuttX/nuttx/arch/arm/src/stm32/stm32f40xxx_rcc.c
index 5e2ba73..adda863 100644
--- NuttX/nuttx/arch/arm/src/stm32/stm32f40xxx_rcc.c
+++ NuttX/nuttx/arch/arm/src/stm32/stm32f40xxx_rcc.c
@@ -95,10 +95,10 @@ static inline void rcc_reset(void)
putreg32(0x00000000, STM32_RCC_CFGR);
- /* Reset HSION, HSEON, CSSON and PLLON bits */
+ /* Reset HSEON, CSSON and PLLON bits */
regval = getreg32(STM32_RCC_CR);
- regval &= ~(RCC_CR_HSION | RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLLON);
+ regval &= ~(RCC_CR_HSEON | RCC_CR_CSSON | RCC_CR_PLLON);
putreg32(regval, STM32_RCC_CR);
/* Reset PLLCFGR register to reset default */
@@ -619,11 +619,6 @@ static void stm32_stdclockconfig(void)
volatile int32_t timeout;
#ifdef STM32_BOARD_USEHSI
- /* Enable Internal High-Speed Clock (HSI) */
-
- regval = getreg32(STM32_RCC_CR);
- regval |= RCC_CR_HSION; /* Enable HSI */
- putreg32(regval, STM32_RCC_CR);
/* Wait until the HSI is ready (or until a timeout elapsed) */
diff --git NuttX/nuttx/arch/arm/src/stm32/stm32_flash.c NuttX/nuttx/arch/arm/src/stm32/stm32_flash.c
index 73f1419..9ac38a1 100644
--- NuttX/nuttx/arch/arm/src/stm32/stm32_flash.c
+++ NuttX/nuttx/arch/arm/src/stm32/stm32_flash.c
@@ -231,12 +231,14 @@ ssize_t up_progmem_erasepage(size_t page)
return -EFAULT;
}
- /* Get flash ready and begin erasing single page */
-
+#if !defined(CONFIG_STM32_STM32F40XX)
if (!(getreg32(STM32_RCC_CR) & RCC_CR_HSION))
{
return -EPERM;
}
+#endif
+
+ /* Get flash ready and begin erasing single page */
stm32_flash_unlock();
@@ -318,12 +320,14 @@ ssize_t up_progmem_write(size_t addr, const void *buf, size_t count)
return -EFAULT;
}
- /* Get flash ready and begin flashing */
-
+#if !defined(CONFIG_STM32_STM32F40XX)
if (!(getreg32(STM32_RCC_CR) & RCC_CR_HSION))
{
return -EPERM;
}
+#endif
+
+ /* Get flash ready and begin flashing */
stm32_flash_unlock();