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stm32 lib: declare read-only parameters as const

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Many of the STM32 library functions take a pointer to an
initialization structure.  In nearly every case, this struct
is a read-only (ie. const) parameter.

It is advantageous (and good coding practice) to actually declare
read-only data as const so that the compiler can place the const data
in the .rodata section which resides in flash and doesn't consume any
RAM.  This has the added bonus advantage that it is impossible for the
running application to corrupt the read-only data.

In order to allow passing pointers to const data into the library
functions, it is essential that the function prototypes also declare
their associated read-only parameters as const.  This commit adds
the const attribute to those parameters that are actually read-only.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@758 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
stac 2010-06-13 04:23:15 +00:00 committed by stac
parent aebc358e46
commit 02e0017cbb
10 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/inc/misc.h
View File

@ -193,7 +193,7 @@ typedef struct
*/
void NVIC_PriorityGroupConfig(uint32_t NVIC_PriorityGroup);
void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct);
void NVIC_Init(const NVIC_InitTypeDef* NVIC_InitStruct);
void NVIC_SetVectorTable(uint32_t NVIC_VectTab, uint32_t Offset);
void NVIC_SystemLPConfig(uint8_t LowPowerMode, FunctionalState NewState);
void SysTick_CLKSourceConfig(uint32_t SysTick_CLKSource);

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/inc/stm32f10x_dma.h
View File

@ -407,7 +407,7 @@ typedef struct
*/
void DMA_DeInit(DMA_Channel_TypeDef* DMAy_Channelx);
void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, DMA_InitTypeDef* DMA_InitStruct);
void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, const DMA_InitTypeDef* DMA_InitStruct);
void DMA_StructInit(DMA_InitTypeDef* DMA_InitStruct);
void DMA_Cmd(DMA_Channel_TypeDef* DMAy_Channelx, FunctionalState NewState);
void DMA_ITConfig(DMA_Channel_TypeDef* DMAy_Channelx, uint32_t DMA_IT, FunctionalState NewState);

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/inc/stm32f10x_gpio.h
View File

@ -322,7 +322,7 @@ typedef enum
void GPIO_DeInit(GPIO_TypeDef* GPIOx);
void GPIO_AFIODeInit(void);
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct);
void GPIO_Init(GPIO_TypeDef* GPIOx, const GPIO_InitTypeDef* GPIO_InitStruct);
void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct);
uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin);
uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx);

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/inc/stm32f10x_spi.h
View File

@ -447,7 +447,7 @@ typedef struct
*/
void SPI_I2S_DeInit(SPI_TypeDef* SPIx);
void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct);
void SPI_Init(SPI_TypeDef* SPIx, const SPI_InitTypeDef* SPI_InitStruct);
void I2S_Init(SPI_TypeDef* SPIx, I2S_InitTypeDef* I2S_InitStruct);
void SPI_StructInit(SPI_InitTypeDef* SPI_InitStruct);
void I2S_StructInit(I2S_InitTypeDef* I2S_InitStruct);

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/inc/stm32f10x_usart.h
View File

@ -362,7 +362,7 @@ typedef struct
*/
void USART_DeInit(USART_TypeDef* USARTx);
void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct);
void USART_Init(USART_TypeDef* USARTx, const USART_InitTypeDef* USART_InitStruct);
void USART_StructInit(USART_InitTypeDef* USART_InitStruct);
void USART_ClockInit(USART_TypeDef* USARTx, USART_ClockInitTypeDef* USART_ClockInitStruct);
void USART_ClockStructInit(USART_ClockInitTypeDef* USART_ClockInitStruct);

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/src/misc.c
View File

@ -108,7 +108,7 @@ void NVIC_PriorityGroupConfig(uint32_t NVIC_PriorityGroup)
* the configuration information for the specified NVIC peripheral.
* @retval None
*/
void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct)
void NVIC_Init(const NVIC_InitTypeDef* NVIC_InitStruct)
{
uint32_t tmppriority = 0x00, tmppre = 0x00, tmpsub = 0x0F;

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_dma.c
View File

@ -199,7 +199,7 @@ void DMA_DeInit(DMA_Channel_TypeDef* DMAy_Channelx)
* contains the configuration information for the specified DMA Channel.
* @retval None
*/
void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, DMA_InitTypeDef* DMA_InitStruct)
void DMA_Init(DMA_Channel_TypeDef* DMAy_Channelx, const DMA_InitTypeDef* DMA_InitStruct)
{
uint32_t tmpreg = 0;

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_gpio.c
View File

@ -169,7 +169,7 @@ void GPIO_AFIODeInit(void)
* contains the configuration information for the specified GPIO peripheral.
* @retval None
*/
void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
void GPIO_Init(GPIO_TypeDef* GPIOx, const GPIO_InitTypeDef* GPIO_InitStruct)
{
uint32_t currentmode = 0x00, currentpin = 0x00, pinpos = 0x00, pos = 0x00;
uint32_t tmpreg = 0x00, pinmask = 0x00;

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_spi.c
View File

@ -154,7 +154,7 @@ void SPI_I2S_DeInit(SPI_TypeDef* SPIx)
* contains the configuration information for the specified SPI peripheral.
* @retval None
*/
void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct)
void SPI_Init(SPI_TypeDef* SPIx, const SPI_InitTypeDef* SPI_InitStruct)
{
uint16_t tmpreg = 0;

2
flight/PiOS/STM32F10x/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_usart.c
View File

@ -162,7 +162,7 @@ void USART_DeInit(USART_TypeDef* USARTx)
* that contains the configuration information for the specified USART peripheral.
* @retval None
*/
void USART_Init(USART_TypeDef* USARTx, USART_InitTypeDef* USART_InitStruct)
void USART_Init(USART_TypeDef* USARTx, const USART_InitTypeDef* USART_InitStruct)
{
uint32_t tmpreg = 0x00, apbclock = 0x00;
uint32_t integerdivider = 0x00;