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Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_ssp.c
- Revision:
- 3:f151d08d335c
- Parent:
- 2:1df0b61d3b5a
diff -r 1df0b61d3b5a -r f151d08d335c libs/LPC17xx/LPC17xxLib/src/lpc17xx_ssp.c --- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_ssp.c Fri Feb 28 18:52:52 2014 -0800 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,691 +0,0 @@ -#ifdef __LPC17XX__ - -/********************************************************************** -* $Id$ lpc17xx_ssp.c 2010-06-18 -*//** -* @file lpc17xx_ssp.c -* @brief Contains all functions support for SSP firmware library on LPC17xx -* @version 3.0 -* @date 18. June. 2010 -* @author NXP MCU SW Application Team -* -* Copyright(C) 2010, NXP Semiconductor -* All rights reserved. -* -*********************************************************************** -* Software that is described herein is for illustrative purposes only -* which provides customers with programming information regarding the -* products. This software is supplied "AS IS" without any warranties. -* NXP Semiconductors assumes no responsibility or liability for the -* use of the software, conveys no license or title under any patent, -* copyright, or mask work right to the product. NXP Semiconductors -* reserves the right to make changes in the software without -* notification. NXP Semiconductors also make no representation or -* warranty that such application will be suitable for the specified -* use without further testing or modification. -**********************************************************************/ - -/* Peripheral group ----------------------------------------------------------- */ -/** @addtogroup SSP - * @{ - */ - -/* Includes ------------------------------------------------------------------- */ -#include "lpc17xx_ssp.h" -#include "lpc17xx_clkpwr.h" - - -/* If this source file built with example, the LPC17xx FW library configuration - * file in each example directory ("lpc17xx_libcfg.h") must be included, - * otherwise the default FW library configuration file must be included instead - */ -#ifdef __BUILD_WITH_EXAMPLE__ -#include "lpc17xx_libcfg.h" -#else -#include "lpc17xx_libcfg_default.h" -#endif /* __BUILD_WITH_EXAMPLE__ */ - - -#ifdef _SSP - -/* Public Functions ----------------------------------------------------------- */ -/** @addtogroup SSP_Public_Functions - * @{ - */ -static void setSSPclock (LPC_SSP_TypeDef *SSPx, uint32_t target_clock); - -/*********************************************************************//** - * @brief Setup clock rate for SSP device - * @param[in] SSPx SSP peripheral definition, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] target_clock : clock of SSP (Hz) - * @return None - ***********************************************************************/ -static void setSSPclock (LPC_SSP_TypeDef *SSPx, uint32_t target_clock) -{ - uint32_t prescale, cr0_div, cmp_clk, ssp_clk; - - CHECK_PARAM(PARAM_SSPx(SSPx)); - - /* The SSP clock is derived from the (main system oscillator / 2), - so compute the best divider from that clock */ - if (SSPx == LPC_SSP0){ - ssp_clk = CLKPWR_GetPCLK (CLKPWR_PCLKSEL_SSP0); - } else if (SSPx == LPC_SSP1) { - ssp_clk = CLKPWR_GetPCLK (CLKPWR_PCLKSEL_SSP1); - } else { - return; - } - - /* Find closest divider to get at or under the target frequency. - Use smallest prescale possible and rely on the divider to get - the closest target frequency */ - cr0_div = 0; - cmp_clk = 0xFFFFFFFF; - prescale = 2; - while (cmp_clk > target_clock) - { - cmp_clk = ssp_clk / ((cr0_div + 1) * prescale); - if (cmp_clk > target_clock) - { - cr0_div++; - if (cr0_div > 0xFF) - { - cr0_div = 0; - prescale += 2; - } - } - } - - /* Write computed prescaler and divider back to register */ - SSPx->CR0 &= (~SSP_CR0_SCR(0xFF)) & SSP_CR0_BITMASK; - SSPx->CR0 |= (SSP_CR0_SCR(cr0_div)) & SSP_CR0_BITMASK; - SSPx->CPSR = prescale & SSP_CPSR_BITMASK; -} - -/** - * @} - */ - -/* Public Functions ----------------------------------------------------------- */ -/** @addtogroup SSP_Public_Functions - * @{ - */ - -/********************************************************************//** - * @brief Initializes the SSPx peripheral according to the specified -* parameters in the SSP_ConfigStruct. - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] SSP_ConfigStruct Pointer to a SSP_CFG_Type structure -* that contains the configuration information for the -* specified SSP peripheral. - * @return None - *********************************************************************/ -void SSP_Init(LPC_SSP_TypeDef *SSPx, SSP_CFG_Type *SSP_ConfigStruct) -{ - uint32_t tmp; - - CHECK_PARAM(PARAM_SSPx(SSPx)); - - if(SSPx == LPC_SSP0) { - /* Set up clock and power for SSP0 module */ - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP0, ENABLE); - } else if(SSPx == LPC_SSP1) { - /* Set up clock and power for SSP1 module */ - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP1, ENABLE); - } else { - return; - } - - /* Configure SSP, interrupt is disable, LoopBack mode is disable, - * SSP is disable, Slave output is disable as default - */ - tmp = ((SSP_ConfigStruct->CPHA) | (SSP_ConfigStruct->CPOL) \ - | (SSP_ConfigStruct->FrameFormat) | (SSP_ConfigStruct->Databit)) - & SSP_CR0_BITMASK; - // write back to SSP control register - SSPx->CR0 = tmp; - - tmp = SSP_ConfigStruct->Mode & SSP_CR1_BITMASK; - // Write back to CR1 - SSPx->CR1 = tmp; - - // Set clock rate for SSP peripheral - setSSPclock(SSPx, SSP_ConfigStruct->ClockRate); -} - -/*********************************************************************//** - * @brief De-initializes the SSPx peripheral registers to their -* default reset values. - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @return None - **********************************************************************/ -void SSP_DeInit(LPC_SSP_TypeDef* SSPx) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - - if (SSPx == LPC_SSP0){ - /* Set up clock and power for SSP0 module */ - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP0, DISABLE); - } else if (SSPx == LPC_SSP1) { - /* Set up clock and power for SSP1 module */ - CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSSP1, DISABLE); - } -} - -/*****************************************************************************//** -* @brief Get data size bit selected -* @param[in] SSPx pointer to LPC_SSP_TypeDef structure, should be: -* - LPC_SSP0: SSP0 peripheral -* - LPC_SSP1: SSP1 peripheral -* @return Data size, could be: -* - SSP_DATABIT_4: 4 bit transfer -* - SSP_DATABIT_5: 5 bit transfer -* ... -* - SSP_DATABIT_16: 16 bit transfer -*******************************************************************************/ -uint8_t SSP_GetDataSize(LPC_SSP_TypeDef* SSPx) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - return (SSPx->CR0 & (0xF)); -} - -/*****************************************************************************//** -* @brief Fills each SSP_InitStruct member with its default value: -* - CPHA = SSP_CPHA_FIRST -* - CPOL = SSP_CPOL_HI -* - ClockRate = 1000000 -* - Databit = SSP_DATABIT_8 -* - Mode = SSP_MASTER_MODE -* - FrameFormat = SSP_FRAME_SSP -* @param[in] SSP_InitStruct Pointer to a SSP_CFG_Type structure -* which will be initialized. -* @return None -*******************************************************************************/ -void SSP_ConfigStructInit(SSP_CFG_Type *SSP_InitStruct) -{ - SSP_InitStruct->CPHA = SSP_CPHA_FIRST; - SSP_InitStruct->CPOL = SSP_CPOL_HI; - SSP_InitStruct->ClockRate = 1000000; - SSP_InitStruct->Databit = SSP_DATABIT_8; - SSP_InitStruct->Mode = SSP_MASTER_MODE; - SSP_InitStruct->FrameFormat = SSP_FRAME_SPI; -} - - -/*********************************************************************//** - * @brief Enable or disable SSP peripheral's operation - * @param[in] SSPx SSP peripheral, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] NewState New State of SSPx peripheral's operation - * @return none - **********************************************************************/ -void SSP_Cmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - - if (NewState == ENABLE) - { - SSPx->CR1 |= SSP_CR1_SSP_EN; - } - else - { - SSPx->CR1 &= (~SSP_CR1_SSP_EN) & SSP_CR1_BITMASK; - } -} - -/*********************************************************************//** - * @brief Enable or disable Loop Back mode function in SSP peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] NewState New State of Loop Back mode, should be: - * - ENABLE: Enable this function - * - DISABLE: Disable this function - * @return None - **********************************************************************/ -void SSP_LoopBackCmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - - if (NewState == ENABLE) - { - SSPx->CR1 |= SSP_CR1_LBM_EN; - } - else - { - SSPx->CR1 &= (~SSP_CR1_LBM_EN) & SSP_CR1_BITMASK; - } -} - -/*********************************************************************//** - * @brief Enable or disable Slave Output function in SSP peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] NewState New State of Slave Output function, should be: - * - ENABLE: Slave Output in normal operation - * - DISABLE: Slave Output is disabled. This blocks - * SSP controller from driving the transmit data - * line (MISO) - * Note: This function is available when SSP peripheral in Slave mode - * @return None - **********************************************************************/ -void SSP_SlaveOutputCmd(LPC_SSP_TypeDef* SSPx, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - - if (NewState == ENABLE) - { - SSPx->CR1 &= (~SSP_CR1_SO_DISABLE) & SSP_CR1_BITMASK; - } - else - { - SSPx->CR1 |= SSP_CR1_SO_DISABLE; - } -} - - - -/*********************************************************************//** - * @brief Transmit a single data through SSPx peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] Data Data to transmit (must be 16 or 8-bit long, - * this depend on SSP data bit number configured) - * @return none - **********************************************************************/ -void SSP_SendData(LPC_SSP_TypeDef* SSPx, uint16_t Data) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - - SSPx->DR = SSP_DR_BITMASK(Data); -} - - - -/*********************************************************************//** - * @brief Receive a single data from SSPx peripheral - * @param[in] SSPx SSP peripheral selected, should be - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @return Data received (16-bit long) - **********************************************************************/ -uint16_t SSP_ReceiveData(LPC_SSP_TypeDef* SSPx) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - - return ((uint16_t) (SSP_DR_BITMASK(SSPx->DR))); -} - -/*********************************************************************//** - * @brief SSP Read write data function - * @param[in] SSPx Pointer to SSP peripheral, should be - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] dataCfg Pointer to a SSP_DATA_SETUP_Type structure that - * contains specified information about transmit - * data configuration. - * @param[in] xfType Transfer type, should be: - * - SSP_TRANSFER_POLLING: Polling mode - * - SSP_TRANSFER_INTERRUPT: Interrupt mode - * @return Actual Data length has been transferred in polling mode. - * In interrupt mode, always return (0) - * Return (-1) if error. - * Note: This function can be used in both master and slave mode. - ***********************************************************************/ -int32_t SSP_ReadWrite (LPC_SSP_TypeDef *SSPx, SSP_DATA_SETUP_Type *dataCfg, \ - SSP_TRANSFER_Type xfType) -{ - uint8_t *rdata8 = NULL; - uint8_t *wdata8 = NULL; - uint16_t *rdata16 = NULL; - uint16_t *wdata16 = NULL; - uint32_t stat; - uint32_t tmp; - int32_t dataword; - - dataCfg->rx_cnt = 0; - dataCfg->tx_cnt = 0; - dataCfg->status = 0; - - - /* Clear all remaining data in RX FIFO */ - while (SSPx->SR & SSP_SR_RNE){ - tmp = (uint32_t) SSP_ReceiveData(SSPx); - } - - // Clear status - SSPx->ICR = SSP_ICR_BITMASK; - if(SSP_GetDataSize(SSPx)>8) - dataword = 1; - else dataword = 0; - - // Polling mode ---------------------------------------------------------------------- - if (xfType == SSP_TRANSFER_POLLING){ - if (dataword == 0){ - rdata8 = (uint8_t *)dataCfg->rx_data; - wdata8 = (uint8_t *)dataCfg->tx_data; - } else { - rdata16 = (uint16_t *)dataCfg->rx_data; - wdata16 = (uint16_t *)dataCfg->tx_data; - } - while ((dataCfg->tx_cnt != dataCfg->length) || (dataCfg->rx_cnt != dataCfg->length)){ - if ((SSPx->SR & SSP_SR_TNF) && (dataCfg->tx_cnt != dataCfg->length)){ - // Write data to buffer - if(dataCfg->tx_data == NULL){ - if (dataword == 0){ - SSP_SendData(SSPx, 0xFF); - dataCfg->tx_cnt++; - } else { - SSP_SendData(SSPx, 0xFFFF); - dataCfg->tx_cnt += 2; - } - } else { - if (dataword == 0){ - SSP_SendData(SSPx, *wdata8); - wdata8++; - dataCfg->tx_cnt++; - } else { - SSP_SendData(SSPx, *wdata16); - wdata16++; - dataCfg->tx_cnt += 2; - } - } - } - - // Check overrun error - if ((stat = SSPx->RIS) & SSP_RIS_ROR){ - // save status and return - dataCfg->status = stat | SSP_STAT_ERROR; - return (-1); - } - - // Check for any data available in RX FIFO - while ((SSPx->SR & SSP_SR_RNE) && (dataCfg->rx_cnt != dataCfg->length)){ - // Read data from SSP data - tmp = SSP_ReceiveData(SSPx); - - // Store data to destination - if (dataCfg->rx_data != NULL) - { - if (dataword == 0){ - *(rdata8) = (uint8_t) tmp; - rdata8++; - } else { - *(rdata16) = (uint16_t) tmp; - rdata16++; - } - } - // Increase counter - if (dataword == 0){ - dataCfg->rx_cnt++; - } else { - dataCfg->rx_cnt += 2; - } - } - } - - // save status - dataCfg->status = SSP_STAT_DONE; - - if (dataCfg->tx_data != NULL){ - return dataCfg->tx_cnt; - } else if (dataCfg->rx_data != NULL){ - return dataCfg->rx_cnt; - } else { - return (0); - } - } - - // Interrupt mode ---------------------------------------------------------------------- - else if (xfType == SSP_TRANSFER_INTERRUPT){ - - while ((SSPx->SR & SSP_SR_TNF) && (dataCfg->tx_cnt != dataCfg->length)){ - // Write data to buffer - if(dataCfg->tx_data == NULL){ - if (dataword == 0){ - SSP_SendData(SSPx, 0xFF); - dataCfg->tx_cnt++; - } else { - SSP_SendData(SSPx, 0xFFFF); - dataCfg->tx_cnt += 2; - } - } else { - if (dataword == 0){ - SSP_SendData(SSPx, (*(uint8_t *)((uint32_t)dataCfg->tx_data + dataCfg->tx_cnt))); - dataCfg->tx_cnt++; - } else { - SSP_SendData(SSPx, (*(uint16_t *)((uint32_t)dataCfg->tx_data + dataCfg->tx_cnt))); - dataCfg->tx_cnt += 2; - } - } - - // Check error - if ((stat = SSPx->RIS) & SSP_RIS_ROR){ - // save status and return - dataCfg->status = stat | SSP_STAT_ERROR; - return (-1); - } - - // Check for any data available in RX FIFO - while ((SSPx->SR & SSP_SR_RNE) && (dataCfg->rx_cnt != dataCfg->length)){ - // Read data from SSP data - tmp = SSP_ReceiveData(SSPx); - - // Store data to destination - if (dataCfg->rx_data != NULL) - { - if (dataword == 0){ - *(uint8_t *)((uint32_t)dataCfg->rx_data + dataCfg->rx_cnt) = (uint8_t) tmp; - } else { - *(uint16_t *)((uint32_t)dataCfg->rx_data + dataCfg->rx_cnt) = (uint16_t) tmp; - } - } - // Increase counter - if (dataword == 0){ - dataCfg->rx_cnt++; - } else { - dataCfg->rx_cnt += 2; - } - } - } - - // If there more data to sent or receive - if ((dataCfg->rx_cnt != dataCfg->length) || (dataCfg->tx_cnt != dataCfg->length)){ - // Enable all interrupt - SSPx->IMSC = SSP_IMSC_BITMASK; - } else { - // Save status - dataCfg->status = SSP_STAT_DONE; - } - return (0); - } - - return (-1); -} - -/*********************************************************************//** - * @brief Checks whether the specified SSP status flag is set or not - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] FlagType Type of flag to check status, should be one - * of following: - * - SSP_STAT_TXFIFO_EMPTY: TX FIFO is empty - * - SSP_STAT_TXFIFO_NOTFULL: TX FIFO is not full - * - SSP_STAT_RXFIFO_NOTEMPTY: RX FIFO is not empty - * - SSP_STAT_RXFIFO_FULL: RX FIFO is full - * - SSP_STAT_BUSY: SSP peripheral is busy - * @return New State of specified SSP status flag - **********************************************************************/ -FlagStatus SSP_GetStatus(LPC_SSP_TypeDef* SSPx, uint32_t FlagType) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_SSP_STAT(FlagType)); - - return ((SSPx->SR & FlagType) ? SET : RESET); -} - -/*********************************************************************//** - * @brief Enable or disable specified interrupt type in SSP peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] IntType Interrupt type in SSP peripheral, should be: - * - SSP_INTCFG_ROR: Receive Overrun interrupt - * - SSP_INTCFG_RT: Receive Time out interrupt - * - SSP_INTCFG_RX: RX FIFO is at least half full interrupt - * - SSP_INTCFG_TX: TX FIFO is at least half empty interrupt - * @param[in] NewState New State of specified interrupt type, should be: - * - ENABLE: Enable this interrupt type - * - DISABLE: Disable this interrupt type - * @return None - * Note: We can enable/disable multi-interrupt type by OR multi value - **********************************************************************/ -void SSP_IntConfig(LPC_SSP_TypeDef *SSPx, uint32_t IntType, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - - if (NewState == ENABLE) - { - SSPx->IMSC |= IntType; - } - else - { - SSPx->IMSC &= (~IntType) & SSP_IMSC_BITMASK; - } -} - -/*********************************************************************//** - * @brief Check whether the specified Raw interrupt status flag is - * set or not - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] RawIntType Raw Interrupt Type, should be: - * - SSP_INTSTAT_RAW_ROR: Receive Overrun interrupt - * - SSP_INTSTAT_RAW_RT: Receive Time out interrupt - * - SSP_INTSTAT_RAW_RX: RX FIFO is at least half full interrupt - * - SSP_INTSTAT_RAW_TX: TX FIFO is at least half empty interrupt - * @return New State of specified Raw interrupt status flag in SSP peripheral - * Note: Enabling/Disabling specified interrupt in SSP peripheral does not - * effect to Raw Interrupt Status flag. - **********************************************************************/ -IntStatus SSP_GetRawIntStatus(LPC_SSP_TypeDef *SSPx, uint32_t RawIntType) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_SSP_INTSTAT_RAW(RawIntType)); - - return ((SSPx->RIS & RawIntType) ? SET : RESET); -} - -/*********************************************************************//** - * @brief Get Raw Interrupt Status register - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @return Raw Interrupt Status (RIS) register value - **********************************************************************/ -uint32_t SSP_GetRawIntStatusReg(LPC_SSP_TypeDef *SSPx) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - return (SSPx->RIS); -} - -/*********************************************************************//** - * @brief Check whether the specified interrupt status flag is - * set or not - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] IntType Raw Interrupt Type, should be: - * - SSP_INTSTAT_ROR: Receive Overrun interrupt - * - SSP_INTSTAT_RT: Receive Time out interrupt - * - SSP_INTSTAT_RX: RX FIFO is at least half full interrupt - * - SSP_INTSTAT_TX: TX FIFO is at least half empty interrupt - * @return New State of specified interrupt status flag in SSP peripheral - * Note: Enabling/Disabling specified interrupt in SSP peripheral effects - * to Interrupt Status flag. - **********************************************************************/ -IntStatus SSP_GetIntStatus (LPC_SSP_TypeDef *SSPx, uint32_t IntType) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_SSP_INTSTAT(IntType)); - - return ((SSPx->MIS & IntType) ? SET :RESET); -} - -/*********************************************************************//** - * @brief Clear specified interrupt pending in SSP peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] IntType Interrupt pending to clear, should be: - * - SSP_INTCLR_ROR: clears the "frame was received when - * RxFIFO was full" interrupt. - * - SSP_INTCLR_RT: clears the "Rx FIFO was not empty and - * has not been read for a timeout period" interrupt. - * @return None - **********************************************************************/ -void SSP_ClearIntPending(LPC_SSP_TypeDef *SSPx, uint32_t IntType) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_SSP_INTCLR(IntType)); - - SSPx->ICR = IntType; -} - -/*********************************************************************//** - * @brief Enable/Disable DMA function for SSP peripheral - * @param[in] SSPx SSP peripheral selected, should be: - * - LPC_SSP0: SSP0 peripheral - * - LPC_SSP1: SSP1 peripheral - * @param[in] DMAMode Type of DMA, should be: - * - SSP_DMA_TX: DMA for the transmit FIFO - * - SSP_DMA_RX: DMA for the Receive FIFO - * @param[in] NewState New State of DMA function on SSP peripheral, - * should be: - * - ENALBE: Enable this function - * - DISABLE: Disable this function - * @return None - **********************************************************************/ -void SSP_DMACmd(LPC_SSP_TypeDef *SSPx, uint32_t DMAMode, FunctionalState NewState) -{ - CHECK_PARAM(PARAM_SSPx(SSPx)); - CHECK_PARAM(PARAM_SSP_DMA(DMAMode)); - CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState)); - - if (NewState == ENABLE) - { - SSPx->DMACR |= DMAMode; - } - else - { - SSPx->DMACR &= (~DMAMode) & SSP_DMA_BITMASK; - } -} - -/** - * @} - */ - -#endif /* _SSP */ - -/** - * @} - */ - -/* --------------------------------- End Of File ------------------------------ */ - -#endif /* __LPC17XX__ */