From 8ca210a4af9fd039e290cfcc309adde543999c1f Mon Sep 17 00:00:00 2001 From: gdisirio Date: Fri, 9 Aug 2013 08:24:22 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6108 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- os/hal/platforms/LPC11Uxx/serial_lld.c | 296 --------------------------------- 1 file changed, 296 deletions(-) delete mode 100644 os/hal/platforms/LPC11Uxx/serial_lld.c (limited to 'os/hal/platforms/LPC11Uxx/serial_lld.c') diff --git a/os/hal/platforms/LPC11Uxx/serial_lld.c b/os/hal/platforms/LPC11Uxx/serial_lld.c deleted file mode 100644 index 17587cbb0..000000000 --- a/os/hal/platforms/LPC11Uxx/serial_lld.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. -*/ - -/** - * @file LPC11Uxx/serial_lld.c - * @brief LPC11Uxx low level serial driver code. - * - * @addtogroup SERIAL - * @{ - */ - -#include "ch.h" -#include "hal.h" - -#if HAL_USE_SERIAL || defined(__DOXYGEN__) - -/*===========================================================================*/ -/* Driver exported variables. */ -/*===========================================================================*/ - -#if LPC_SERIAL_USE_UART0 || defined(__DOXYGEN__) -/** @brief UART0 serial driver identifier.*/ -SerialDriver SD1; -#endif - -/*===========================================================================*/ -/* Driver local variables and types. */ -/*===========================================================================*/ - -/** @brief Driver default configuration.*/ -static const SerialConfig default_config = { - SERIAL_DEFAULT_BITRATE, - LCR_WL8 | LCR_STOP1 | LCR_NOPARITY, - FCR_TRIGGER0 -}; - -/*===========================================================================*/ -/* Driver local functions. */ -/*===========================================================================*/ - -/** - * @brief USART initialization. - * - * @param[in] sdp communication channel associated to the USART - * @param[in] config the architecture-dependent serial driver configuration - */ -static void uart_init(SerialDriver *sdp, const SerialConfig *config) { - LPC_USART_Type *u = sdp->uart; - - uint32_t div = LPC_SERIAL_UART0_PCLK / (config->sc_speed << 4); - u->LCR = config->sc_lcr | LCR_DLAB; - u->DLL = div; - u->DLM = div >> 8; - u->LCR = config->sc_lcr; - u->FCR = FCR_ENABLE | FCR_RXRESET | FCR_TXRESET | config->sc_fcr; - u->ACR = 0; - u->FDR = 0x10; - u->TER = TER_ENABLE; - u->IER = IER_RBR | IER_STATUS; -} - -/** - * @brief USART de-initialization. - * - * @param[in] u pointer to an USART I/O block - */ -static void uart_deinit(LPC_USART_Type *u) { - - u->LCR = LCR_DLAB; - u->DLL = 1; - u->DLM = 0; - u->LCR = 0; - u->FDR = 0x10; - u->IER = 0; - u->FCR = FCR_RXRESET | FCR_TXRESET; - u->ACR = 0; - u->TER = TER_ENABLE; -} - -/** - * @brief Error handling routine. - * - * @param[in] sdp communication channel associated to the UART - * @param[in] err UART LSR register value - */ -static void set_error(SerialDriver *sdp, IOREG32 err) { - flagsmask_t sts = 0; - - if (err & LSR_OVERRUN) - sts |= SD_OVERRUN_ERROR; - if (err & LSR_PARITY) - sts |= SD_PARITY_ERROR; - if (err & LSR_FRAMING) - sts |= SD_FRAMING_ERROR; - if (err & LSR_BREAK) - sts |= SD_BREAK_DETECTED; - chSysLockFromIsr(); - chnAddFlagsI(sdp, sts); - chSysUnlockFromIsr(); -} - -/** - * @brief Common IRQ handler. - * @note Tries hard to clear all the pending interrupt sources, we don't - * 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) { - LPC_USART_Type *u = sdp->uart; - - while (TRUE) { - switch (u->IIR & IIR_SRC_MASK) { - case IIR_SRC_NONE: - return; - case IIR_SRC_ERROR: - set_error(sdp, u->LSR); - break; - case IIR_SRC_TIMEOUT: - case IIR_SRC_RX: - chSysLockFromIsr(); - if (chIQIsEmptyI(&sdp->iqueue)) - chnAddFlagsI(sdp, CHN_INPUT_AVAILABLE); - chSysUnlockFromIsr(); - while (u->LSR & LSR_RBR_FULL) { - chSysLockFromIsr(); - if (chIQPutI(&sdp->iqueue, u->RBR) < Q_OK) - chnAddFlagsI(sdp, SD_OVERRUN_ERROR); - chSysUnlockFromIsr(); - } - break; - case IIR_SRC_TX: - { - int i = LPC_SERIAL_FIFO_PRELOAD; - do { - msg_t b; - - chSysLockFromIsr(); - b = chOQGetI(&sdp->oqueue); - chSysUnlockFromIsr(); - if (b < Q_OK) { - u->IER &= ~IER_THRE; - chSysLockFromIsr(); - chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY); - chSysUnlockFromIsr(); - break; - } - u->THR = b; - } while (--i); - } - break; - default: - (void) u->THR; - (void) u->RBR; - } - } -} - -/** - * @brief Attempts a TX FIFO preload. - */ -static void preload(SerialDriver *sdp) { - LPC_USART_Type *u = sdp->uart; - - if (u->LSR & LSR_THRE) { - int i = LPC_SERIAL_FIFO_PRELOAD; - do { - msg_t b = chOQGetI(&sdp->oqueue); - if (b < Q_OK) { - chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY); - return; - } - u->THR = b; - } while (--i); - } - u->IER |= IER_THRE; -} - -/** - * @brief Driver SD1 output notification. - */ -#if LPC_SERIAL_USE_UART0 || defined(__DOXYGEN__) -static void notify1(GenericQueue *qp) { - - (void)qp; - preload(&SD1); -} -#endif - -/*===========================================================================*/ -/* Driver interrupt handlers. */ -/*===========================================================================*/ - -/** - * @brief UART0 IRQ handler. - * - * @isr - */ -#if LPC_SERIAL_USE_UART0 || defined(__DOXYGEN__) -CH_IRQ_HANDLER(Vector94) { - - CH_IRQ_PROLOGUE(); - - serve_interrupt(&SD1); - - CH_IRQ_EPILOGUE(); -} -#endif - -/*===========================================================================*/ -/* Driver exported functions. */ -/*===========================================================================*/ - -/** - * @brief Low level serial driver initialization. - * - * @notapi - */ -void sd_lld_init(void) { - -#if LPC_SERIAL_USE_UART0 - sdObjectInit(&SD1, NULL, notify1); - SD1.uart = LPC_USART; -#endif -} - -/** - * @brief Low level serial driver configuration and (re)start. - * - * @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. - * - * @notapi - */ -void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) { - - if (config == NULL) - config = &default_config; - - if (sdp->state == SD_STOP) { -#if LPC_SERIAL_USE_UART0 - if (&SD1 == sdp) { - LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 12); - LPC_SYSCON->UARTCLKDIV = LPC_SERIAL_UART0CLKDIV; - nvicEnableVector(UART_IRQn, - CORTEX_PRIORITY_MASK(LPC_SERIAL_UART0_IRQ_PRIORITY)); - } -#endif - } - uart_init(sdp, config); -} - -/** - * @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 - * - * @notapi - */ -void sd_lld_stop(SerialDriver *sdp) { - - if (sdp->state == SD_READY) { - uart_deinit(sdp->uart); -#if LPC_SERIAL_USE_UART0 - if (&SD1 == sdp) { - LPC_SYSCON->UARTCLKDIV = 0; - LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 12); - nvicDisableVector(UART_IRQn); - return; - } -#endif - } -} - -#endif /* HAL_USE_SERIAL */ - -/** @} */ -- cgit v1.2.3