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ChibiOS
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3179 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2011-07-25 14:25:21 +00:00
parent 00aca9799f
commit 505ca5b117
2 changed files with 109 additions and 63 deletions
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56
os/hal/platforms/STM32/GPIOv2/pal_lld.c
View File

@ -19,8 +19,8 @@
*/
/**
* @file STM32/pal_lld.c
* @brief STM32 GPIO low level driver code.
* @file STM32/GPIOv2/pal_lld.c
* @brief STM32L1xx/STM32F2xx GPIO low level driver code.
*
* @addtogroup PAL
* @{
@ -31,19 +31,27 @@
#if HAL_USE_PAL || defined(__DOXYGEN__)
#if STM32_HAS_GPIOG
#define APB2_EN_MASK (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN | \
RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN | \
RCC_APB2ENR_IOPEEN | RCC_APB2ENR_IOPFEN | \
RCC_APB2ENR_IOPGEN | RCC_APB2ENR_AFIOEN)
#if STM32_HAS_GPIOH
#define AHB_EN_MASK (RCC_APBENR_IOPAEN | RCC_APBENR_IOPBEN | \
RCC_APBENR_IOPCEN | RCC_APBENR_IOPDEN | \
RCC_APBENR_IOPEEN | RCC_APBENR_IOPFEN | \
RCC_APBENR_IOPGEN | RCC_APBENR_IOPHEN)
#define AHB_LPEN_MASK AHB_EN_MASK
#elif STM32_HAS_GPIOG
#define AHB_EN_MASK (RCC_APBENR_IOPAEN | RCC_APBENR_IOPBEN | \
RCC_APBENR_IOPCEN | RCC_APBENR_IOPDEN | \
RCC_APBENR_IOPEEN | RCC_APBENR_IOPFEN | \
RCC_APBENR_IOPGEN)
#define AHB_LPEN_MASK AHB_EN_MASK
#elif STM32_HAS_GPIOE
#define APB2_EN_MASK (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN | \
RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN | \
RCC_APB2ENR_IOPEEN | RCC_APB2ENR_AFIOEN)
#define AHB_EN_MASK (RCC_APBENR_IOPAEN | RCC_APBENR_IOPBEN | \
RCC_APBENR_IOPCEN | RCC_APBENR_IOPDEN | \
RCC_APBENR_IOPEEN)
#define AHB_LPEN_MASK AHB_EN_MASK
#else
#define APB2_EN_MASK (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN | \
RCC_APB2ENR_IOPCEN | RCC_APB2ENR_IOPDEN | \
RCC_APB2ENR_AFIOEN)
#define AHB_EN_MASK (RCC_APBENR_IOPAEN | RCC_APBENR_IOPBEN | \
RCC_APBENR_IOPCEN | RCC_APBENR_IOPDEN)
#define AHB_LPEN_MASK AHB_EN_MASK
#endif
/*===========================================================================*/
@ -58,6 +66,12 @@
/* Driver local functions. */
/*===========================================================================*/
/**
* @brief Initializes a GPIO peripheral.
*
* @param[in] gpiop pointer to the GPIO registers block
* @param[in] config pointer to the configuration structure
*/
static void initgpio(GPIO_TypeDef *gpiop, const stm32_gpio_setup_t *config) {
gpiop->MODER = config->moder;
@ -79,7 +93,7 @@ static void initgpio(GPIO_TypeDef *gpiop, const stm32_gpio_setup_t *config) {
/**
* @brief STM32 I/O ports configuration.
* @details Ports A-D(E, F, G) clocks enabled, AFIO clock enabled.
* @details Ports A-D(E, F, G, H) clocks enabled.
*
* @param[in] config the STM32 ports configuration
*
@ -90,12 +104,8 @@ void _pal_lld_init(const PALConfig *config) {
/*
* Enables the GPIO related clocks.
*/
RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN |
RCC_AHBENR_GPIOCEN | RCC_AHBENR_GPIODEN |
RCC_AHBENR_GPIOEEN | RCC_AHBENR_GPIOHEN;
RCC->AHBLPENR |= RCC_AHBLPENR_GPIOALPEN | RCC_AHBLPENR_GPIOBLPEN |
RCC_AHBLPENR_GPIOCLPEN | RCC_AHBLPENR_GPIODLPEN |
RCC_AHBLPENR_GPIOELPEN | RCC_AHBLPENR_GPIOHLPEN;
RCC->AHBENR |= AHB_EN_MASK;
RCC->AHBLPENR |= AHB_LPEN_MASK;
/*
* Initial GPIO setup.
@ -124,10 +134,8 @@ void _pal_lld_init(const PALConfig *config) {
* with the specified mode.
* @note This function is not meant to be invoked directly by the
* application code.
* @note @p PAL_MODE_UNCONNECTED is implemented as push pull output at 2MHz.
* @note Writing on pads programmed as pull-up or pull-down has the side
* effect to modify the resistor setting because the output latched
* data is used for the resistor selection.
* @note @p PAL_MODE_UNCONNECTED is implemented as push pull at minimum
* speed.
*
* @param[in] port the port identifier
* @param[in] mask the group mask

116
os/hal/platforms/STM32/GPIOv2/pal_lld.h
View File

@ -19,8 +19,8 @@
*/
/**
* @file STM32L1xx/pal_lld.h
* @brief STM32L1xx GPIO low level driver header.
* @file STM32/GPIOv2/pal_lld.h
* @brief STM32L1xx/STM32F2xx GPIO low level driver header.
*
* @addtogroup PAL
* @{
@ -35,6 +35,8 @@
/* Unsupported modes and specific modes */
/*===========================================================================*/
/* Overriding standard PAL definitions with STM32-specific enhanced
definitions.*/
#undef PAL_MODE_RESET
#undef PAL_MODE_UNCONNECTED
#undef PAL_MODE_INPUT
@ -44,91 +46,127 @@
#undef PAL_MODE_OUTPUT_PUSHPULL
#undef PAL_MODE_OUTPUT_OPENDRAIN
#define PAL_STM32_MODE_MASK (3 >> 0)
#define PAL_STM32_MODE_INPUT (0 >> 0)
#define PAL_STM32_MODE_OUTPUT (1 >> 0)
#define PAL_STM32_MODE_ALTERNATE (2 >> 0)
#define PAL_STM32_MODE_ANALOG (3 >> 0)
/**
* @name Pads mode PAL flags.
* @{
*/
#define PAL_STM32_MODE_MASK (3 >> 0) /**< @brief Mode field mask.*/
#define PAL_STM32_MODE_INPUT (0 >> 0) /**< @brief Pad mode input. */
#define PAL_STM32_MODE_OUTPUT (1 >> 0) /**< @brief Pad mode output.*/
#define PAL_STM32_MODE_ALTERNATE (2 >> 0) /**< @brief Pad mode alt. */
#define PAL_STM32_MODE_ANALOG (3 >> 0) /**< @brief Pad mode analog.*/
/** @} */
#define PAL_STM32_OTYPE_MASK (1 >> 2)
#define PAL_STM32_OTYPE_PUSHPULL (0 >> 2)
#define PAL_STM32_OTYPE_OPENDRAIN (1 >> 2)
/**
* @name Output type PAL flags.
* @{
*/
#define PAL_STM32_OTYPE_MASK (1 >> 2) /**< @brief Output type
mask. */
#define PAL_STM32_OTYPE_PUSHPULL (0 >> 2) /**< @brief Output is
push-pull. */
#define PAL_STM32_OTYPE_OPENDRAIN (1 >> 2) /**< @brief Output is open
drain. */
/** @} */
#define PAL_STM32_OSPEED_MASK (3 >> 3)
#define PAL_STM32_OSPEED_400K (0 >> 3)
#define PAL_STM32_OSPEED_2M (1 >> 3)
#define PAL_STM32_OSPEED_10M (2 >> 3)
#define PAL_STM32_OSPEED_40M (3 >> 3)
/**
* @name Output pads speed PAL flags.
* @{
*/
#define PAL_STM32_OSPEED_MASK (3 >> 3) /**< @brief Output speed
mask. */
#define PAL_STM32_OSPEED(n) ((n) >> 3) /**< @brief Speed setting
from 0 to 3. */
/** @} */
#define PAL_STM32_PUDR_MASK (3 >> 5)
#define PAL_STM32_PUDR_FLOATING (0 >> 5)
#define PAL_STM32_PUDR_PULLUP (1 >> 5)
#define PAL_STM32_PUDR_PULLDOWN (2 >> 5)
/**
* @name Pull up/down resistors mode PAL flags.
* @{
*/
#define PAL_STM32_PUDR_MASK (3 >> 5) /**< @brief Resistors mode
mask. */
#define PAL_STM32_PUDR_FLOATING (0 >> 5) /**< @brief Floating input. */
#define PAL_STM32_PUDR_PULLUP (1 >> 5) /**< @brief Input with
pull-up resistor. */
#define PAL_STM32_PUDR_PULLDOWN (2 >> 5) /**< @brief Input with
pull-down resistor. */
/** @} */
#define PAL_STM32_ALTERNATE_MASK (15 >> 7)
#define PAL_STM32_ALTERNATE(n) ((n) >> 7)
/**
* @name Alternate function selection PAL flags.
* @{
*/
#define PAL_STM32_ALTERNATE_MASK (15 >> 7) /**< @brief Alternate function
mask. */
#define PAL_STM32_ALTERNATE(n) ((n) >> 7) /**< @brief Alternate function
setting from 0 to 15. */
/** @} */
/**
* @brief This mode is implemented as input.
*/
#define PAL_MODE_RESET PAL_STM32_MODE_INPUT
#define PAL_MODE_RESET PAL_STM32_MODE_INPUT
/**
* @brief This mode is implemented as output.
*/
#define PAL_MODE_UNCONNECTED PAL_STM32_MODE_OUTPUT
#define PAL_MODE_UNCONNECTED PAL_STM32_MODE_OUTPUT
/**
* @brief Regular input high-Z pad.
*/
#define PAL_MODE_INPUT PAL_STM32_MODE_INPUT
#define PAL_MODE_INPUT PAL_STM32_MODE_INPUT
/**
* @brief Input pad with weak pull up resistor.
*/
#define PAL_MODE_INPUT_PULLUP (PAL_STM32_MODE_INPUT | \
PAL_STM32_PUDR_PULLUP)
#define PAL_MODE_INPUT_PULLUP (PAL_STM32_MODE_INPUT | \
PAL_STM32_PUDR_PULLUP)
/**
* @brief Input pad with weak pull down resistor.
*/
#define PAL_MODE_INPUT_PULLDOWN (PAL_STM32_MODE_INPUT | \
PAL_STM32_PUDR_PULLDOWN)
#define PAL_MODE_INPUT_PULLDOWN (PAL_STM32_MODE_INPUT | \
PAL_STM32_PUDR_PULLDOWN)
/**
* @brief Analog input mode.
*/
#define PAL_MODE_INPUT_ANALOG PAL_STM32_MODE_ANALOG
#define PAL_MODE_INPUT_ANALOG PAL_STM32_MODE_ANALOG
/**
* @brief Push-pull output pad.
*/
#define PAL_MODE_OUTPUT_PUSHPULL (PAL_STM32_MODE_OUTPUT | \
PAL_STM32_OTYPE_PUSHPULL)
#define PAL_MODE_OUTPUT_PUSHPULL (PAL_STM32_MODE_OUTPUT | \
PAL_STM32_OTYPE_PUSHPULL | \
PAL_STM32_OSPEED(3))
/**
* @brief Open-drain output pad.
*/
#define PAL_MODE_OUTPUT_OPENDRAIN (PAL_STM32_MODE_OUTPUT | \
PAL_STM32_OTYPE_OPENDRAIN)
#define PAL_MODE_OUTPUT_OPENDRAIN (PAL_STM32_MODE_OUTPUT | \
PAL_STM32_OTYPE_OPENDRAIN | \
PAL_STM32_OSPEED(3))
/**
* @brief Alternate push-pull output.
*
* @param[in] n alternate function selector
*/
#define PAL_MODE_ALTERNATE_PUSHPULL(n) (PAL_STM32_MODE_ALTERNATE | \
PAL_STM32_OTYPE_PUSHPULL | \
PAL_STM32_ALTERNATE(n))
#define PAL_MODE_ALT_PUSHPULL(n) (PAL_STM32_MODE_ALTERNATE | \
PAL_STM32_OTYPE_PUSHPULL | \
PAL_STM32_OSPEED(3) | \
PAL_STM32_ALTERNATE(n))
/**
* @brief Alternate push-pull output.
*
* @param[in] n alternate function selector
*/
#define PAL_MODE_ALTERNATE_OPENDRAIN(n) (PAL_STM32_MODE_ALTERNATE | \
PAL_STM32_OTYPE_OPENDRAIN | \
PAL_STM32_ALTERNATE(n))
#define PAL_MODE_ALT_OPENDRAIN(n) (PAL_STM32_MODE_ALTERNATE | \
PAL_STM32_OTYPE_OPENDRAIN | \
PAL_STM32_OSPEED(3) | \
PAL_STM32_ALTERNATE(n))
/*===========================================================================*/
/* I/O Ports Types and constants. */