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ChibiOS
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1883 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2010-04-21 17:42:35 +00:00
parent 75792b3d6a
commit f843a37153
3 changed files with 62 additions and 57 deletions
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74
os/hal/platforms/LPC214x/serial_lld.c
View File

@ -18,8 +18,9 @@
*/
/**
* @file LPC214x/serial_lld.c
* @brief LPC214x low level serial driver code.
* @file LPC214x/serial_lld.c
* @brief LPC214x low level serial driver code.
*
* @addtogroup LPC214x_SERIAL
* @{
*/
@ -47,7 +48,7 @@ SerialDriver SD2;
/* Driver local variables. */
/*===========================================================================*/
/** @brief Driver default configuration.*/
/** @brief Driver default configuration.*/
static const SerialConfig default_config = {
SERIAL_DEFAULT_BITRATE,
LCR_WL8 | LCR_STOP1 | LCR_NOPARITY,
@ -59,19 +60,20 @@ static const SerialConfig default_config = {
/*===========================================================================*/
/**
* @brief UART initialization.
* @brief UART initialization.
*
* @param[in] sdp communication channel associated to the UART
* @param[in] sdp communication channel associated to the UART
* @param[in] config the architecture-dependent serial driver configuration
*/
static void uart_init(SerialDriver *sdp) {
static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
UART *u = sdp->uart;
uint32_t div = PCLK / (sdp->config->sc_speed << 4);
u->UART_LCR = sdp->config->sc_lcr | LCR_DLAB;
uint32_t div = PCLK / (config->sc_speed << 4);
u->UART_LCR = config->sc_lcr | LCR_DLAB;
u->UART_DLL = div;
u->UART_DLM = div >> 8;
u->UART_LCR = sdp->config->sc_lcr;
u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | sdp->config->sc_fcr;
u->UART_LCR = config->sc_lcr;
u->UART_FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | config->sc_fcr;
u->UART_ACR = 0;
u->UART_FDR = 0x10;
u->UART_TER = TER_ENABLE;
@ -79,9 +81,9 @@ static void uart_init(SerialDriver *sdp) {
}
/**
* @brief UART de-initialization.
* @brief UART de-initialization.
*
* @param[in] u pointer to an UART I/O block
* @param[in] u pointer to an UART I/O block
*/
static void uart_deinit(UART *u) {
@ -97,10 +99,10 @@ static void uart_deinit(UART *u) {
}
/**
* @brief Error handling routine.
* @brief Error handling routine.
*
* @param[in] sdp communication channel associated to the UART
* @param[in] err UART LSR register value
* @param[in] sdp communication channel associated to the UART
* @param[in] err UART LSR register value
*/
static void set_error(SerialDriver *sdp, IOREG32 err) {
sdflags_t sts = 0;
@ -122,11 +124,12 @@ static void set_error(SerialDriver *sdp, IOREG32 err) {
__attribute__((noinline))
#endif
/**
* @brief Common IRQ handler.
* @param[in] u pointer to an UART I/O block
* @param[in] sdp communication channel associated to the UART
* @note Tries hard to clear all the pending interrupt sources, we dont want to
* go through the whole ISR and have another interrupt soon after.
* @brief Common IRQ handler.
* @note Tries hard to clear all the pending interrupt sources, we dont want
* to go through the whole ISR and have another interrupt soon after.
*
* @param[in] u pointer to an UART I/O block
* @param[in] sdp communication channel associated to the UART
*/
static void serve_interrupt(SerialDriver *sdp) {
UART *u = sdp->uart;
@ -179,7 +182,7 @@ static void serve_interrupt(SerialDriver *sdp) {
}
/**
* @brief Attempts a TX FIFO preload.
* @brief Attempts a TX FIFO preload.
*/
static void preload(SerialDriver *sdp) {
UART *u = sdp->uart;
@ -199,7 +202,7 @@ static void preload(SerialDriver *sdp) {
}
/**
* @brief Driver SD1 output notification.
* @brief Driver SD1 output notification.
*/
#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
static void notify1(void) {
@ -209,7 +212,7 @@ static void notify1(void) {
#endif
/**
* @brief Driver SD2 output notification.
* @brief Driver SD2 output notification.
*/
#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
static void notify2(void) {
@ -223,7 +226,7 @@ static void notify2(void) {
/*===========================================================================*/
/**
* @brief UART0 IRQ handler.
* @brief UART0 IRQ handler.
*/
#if USE_LPC214x_UART0 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(UART0IrqHandler) {
@ -238,7 +241,7 @@ CH_IRQ_HANDLER(UART0IrqHandler) {
#endif
/**
* @brief UART1 IRQ handler.
* @brief UART1 IRQ handler.
*/
#if USE_LPC214x_UART1 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(UART1IrqHandler) {
@ -257,7 +260,7 @@ CH_IRQ_HANDLER(UART1IrqHandler) {
/*===========================================================================*/
/**
* Low level serial driver initialization.
* @brief Low level serial driver initialization.
*/
void sd_lld_init(void) {
@ -274,14 +277,17 @@ void sd_lld_init(void) {
}
/**
* @brief Low level serial driver configuration and (re)start.
* @brief Low level serial driver configuration and (re)start.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] config the architecture-dependent serial driver configuration.
* If this parameter is set to @p NULL then a default
* configuration is used.
*/
void sd_lld_start(SerialDriver *sdp) {
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
if (sdp->config == NULL)
sdp->config = &default_config;
if (config == NULL)
config = &default_config;
if (sdp->state == SD_STOP) {
#if USE_LPC214x_UART0
@ -297,15 +303,15 @@ void sd_lld_start(SerialDriver *sdp) {
}
#endif
}
uart_init(sdp);
uart_init(sdp, config);
}
/**
* @brief Low level serial driver stop.
* @brief Low level serial driver stop.
* @details De-initializes the UART, stops the associated clock, resets the
* interrupt vector.
*
* @param[in] sdp pointer to a @p SerialDriver object
* @param[in] sdp pointer to a @p SerialDriver object
*/
void sd_lld_stop(SerialDriver *sdp) {

37
os/hal/platforms/LPC214x/serial_lld.h
View File

@ -18,8 +18,9 @@
*/
/**
* @file LPC214x/serial_lld.h
* @brief LPC214x low level serial driver header.
* @file LPC214x/serial_lld.h
* @brief LPC214x low level serial driver header.
*
* @addtogroup LPC214x_SERIAL
* @{
*/
@ -38,45 +39,45 @@
/*===========================================================================*/
/**
* @brief UART0 driver enable switch.
* @brief UART0 driver enable switch.
* @details If set to @p TRUE the support for UART0 is included.
* @note The default is @p TRUE .
* @note The default is @p TRUE .
*/
#if !defined(USE_LPC214x_UART0) || defined(__DOXYGEN__)
#define USE_LPC214x_UART0 TRUE
#endif
/**
* @brief UART1 driver enable switch.
* @brief UART1 driver enable switch.
* @details If set to @p TRUE the support for UART1 is included.
* @note The default is @p TRUE.
* @note The default is @p TRUE.
*/
#if !defined(USE_LPC214x_UART1) || defined(__DOXYGEN__)
#define USE_LPC214x_UART1 TRUE
#endif
/**
* @brief FIFO preload parameter.
* @brief FIFO preload parameter.
* @details Configuration parameter, this values defines how many bytes are
* preloaded in the HW transmit FIFO for each interrupt, the maximum value is
* 16 the minimum is 1.
* @note An high value reduces the number of interrupts generated but can
* also increase the worst case interrupt response time because the
* preload loops.
* preloaded in the HW transmit FIFO for each interrupt, the maximum
* value is 16 the minimum is 1.
* @note An high value reduces the number of interrupts generated but can
* also increase the worst case interrupt response time because the
* preload loops.
*/
#if !defined(LPC214x_UART_FIFO_PRELOAD) || defined(__DOXYGEN__)
#define LPC214x_UART_FIFO_PRELOAD 16
#endif
/**
* @brief UART0 interrupt priority level setting.
* @brief UART0 interrupt priority level setting.
*/
#if !defined(LPC214x_UART0_PRIORITY) || defined(__DOXYGEN__)
#define LPC214x_UART0_PRIORITY 1
#endif
/**
* @brief UART1 interrupt priority level setting.
* @brief UART1 interrupt priority level setting.
*/
#if !defined(LPC214x_UART1_PRIORITY) || defined(__DOXYGEN__)
#define LPC214x_UART1_PRIORITY 2
@ -95,12 +96,12 @@
/*===========================================================================*/
/**
* @brief Serial Driver condition flags type.
* @brief Serial Driver condition flags type.
*/
typedef uint32_t sdflags_t;
/**
* @brief LPC214x Serial Driver configuration structure.
* @brief LPC214x Serial Driver configuration structure.
* @details An instance of this structure must be passed to @p sdStart()
* in order to configure and start a serial driver operations.
*/
@ -126,8 +127,6 @@ typedef struct {
_base_asynchronous_channel_data \
/* Driver state.*/ \
sdstate_t state; \
/* Current configuration data.*/ \
const SerialConfig *config; \
/* Input queue.*/ \
InputQueue iqueue; \
/* Output queue.*/ \
@ -163,7 +162,7 @@ extern SerialDriver SD2;
extern "C" {
#endif
void sd_lld_init(void);
void sd_lld_start(SerialDriver *sdp);
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config);
void sd_lld_stop(SerialDriver *sdp);
#ifdef __cplusplus
}

8
os/hal/platforms/MSP430/serial_lld.c
View File

@ -264,18 +264,18 @@ void sd_lld_init(void) {
*/
void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {
if (sdp->config == NULL)
sdp->config = &default_config;
if (config == NULL)
config = &default_config;
#if USE_MSP430_USART0
if (&SD1 == sdp) {
usart0_init(sdp->config);
usart0_init(config);
return;
}
#endif
#if USE_MSP430_USART1
if (&SD2 == sdp) {
usart1_init(sdp->config);
usart1_init(config);
return;
}
#endif