Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/drivers/fsl_lpuart_edma.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
<> 144:ef7eb2e8f9f7 3 * All rights reserved.
<> 144:ef7eb2e8f9f7 4 *
<> 144:ef7eb2e8f9f7 5 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 6 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * o Redistributions of source code must retain the above copyright notice, this list
<> 144:ef7eb2e8f9f7 9 * of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * o Redistributions in binary form must reproduce the above copyright notice, this
<> 144:ef7eb2e8f9f7 12 * list of conditions and the following disclaimer in the documentation and/or
<> 144:ef7eb2e8f9f7 13 * other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
<> 144:ef7eb2e8f9f7 16 * contributors may be used to endorse or promote products derived from this
<> 144:ef7eb2e8f9f7 17 * software without specific prior written permission.
<> 144:ef7eb2e8f9f7 18 *
<> 144:ef7eb2e8f9f7 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
<> 144:ef7eb2e8f9f7 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
<> 144:ef7eb2e8f9f7 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 #include "fsl_lpuart_edma.h"
<> 144:ef7eb2e8f9f7 32 #include "fsl_dmamux.h"
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 /*******************************************************************************
<> 144:ef7eb2e8f9f7 35 * Definitions
<> 144:ef7eb2e8f9f7 36 ******************************************************************************/
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 /*<! Structure definition for lpuart_edma_private_handle_t. The structure is private. */
<> 144:ef7eb2e8f9f7 39 typedef struct _lpuart_edma_private_handle
<> 144:ef7eb2e8f9f7 40 {
<> 144:ef7eb2e8f9f7 41 LPUART_Type *base;
<> 144:ef7eb2e8f9f7 42 lpuart_edma_handle_t *handle;
<> 144:ef7eb2e8f9f7 43 } lpuart_edma_private_handle_t;
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 /* LPUART EDMA transfer handle. */
<> 144:ef7eb2e8f9f7 46 enum _lpuart_edma_tansfer_states
<> 144:ef7eb2e8f9f7 47 {
<> 144:ef7eb2e8f9f7 48 kLPUART_TxIdle, /* TX idle. */
<> 144:ef7eb2e8f9f7 49 kLPUART_TxBusy, /* TX busy. */
<> 144:ef7eb2e8f9f7 50 kLPUART_RxIdle, /* RX idle. */
<> 144:ef7eb2e8f9f7 51 kLPUART_RxBusy /* RX busy. */
<> 144:ef7eb2e8f9f7 52 };
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 /*******************************************************************************
<> 144:ef7eb2e8f9f7 55 * Definitions
<> 144:ef7eb2e8f9f7 56 ******************************************************************************/
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 /*<! Private handle only used for internally. */
<> 144:ef7eb2e8f9f7 59 static lpuart_edma_private_handle_t s_edmaPrivateHandle[FSL_FEATURE_SOC_LPUART_COUNT];
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 /*******************************************************************************
<> 144:ef7eb2e8f9f7 62 * Prototypes
<> 144:ef7eb2e8f9f7 63 ******************************************************************************/
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 /*!
<> 144:ef7eb2e8f9f7 66 * @brief LPUART EDMA send finished callback function.
<> 144:ef7eb2e8f9f7 67 *
<> 144:ef7eb2e8f9f7 68 * This function is called when LPUART EDMA send finished. It disables the LPUART
<> 144:ef7eb2e8f9f7 69 * TX EDMA request and sends @ref kStatus_LPUART_TxIdle to LPUART callback.
<> 144:ef7eb2e8f9f7 70 *
<> 144:ef7eb2e8f9f7 71 * @param handle The EDMA handle.
<> 144:ef7eb2e8f9f7 72 * @param param Callback function parameter.
<> 144:ef7eb2e8f9f7 73 */
<> 144:ef7eb2e8f9f7 74 static void LPUART_SendEDMACallback(edma_handle_t *handle, void *param, bool transferDone, uint32_t tcds);
<> 144:ef7eb2e8f9f7 75
<> 144:ef7eb2e8f9f7 76 /*!
<> 144:ef7eb2e8f9f7 77 * @brief LPUART EDMA receive finished callback function.
<> 144:ef7eb2e8f9f7 78 *
<> 144:ef7eb2e8f9f7 79 * This function is called when LPUART EDMA receive finished. It disables the LPUART
<> 144:ef7eb2e8f9f7 80 * RX EDMA request and sends @ref kStatus_LPUART_RxIdle to LPUART callback.
<> 144:ef7eb2e8f9f7 81 *
<> 144:ef7eb2e8f9f7 82 * @param handle The EDMA handle.
<> 144:ef7eb2e8f9f7 83 * @param param Callback function parameter.
<> 144:ef7eb2e8f9f7 84 */
<> 144:ef7eb2e8f9f7 85 static void LPUART_ReceiveEDMACallback(edma_handle_t *handle, void *param, bool transferDone, uint32_t tcds);
<> 144:ef7eb2e8f9f7 86
<> 144:ef7eb2e8f9f7 87 /*!
<> 144:ef7eb2e8f9f7 88 * @brief Get the LPUART instance from peripheral base address.
<> 144:ef7eb2e8f9f7 89 *
<> 144:ef7eb2e8f9f7 90 * @param base LPUART peripheral base address.
<> 144:ef7eb2e8f9f7 91 * @return LPUART instance.
<> 144:ef7eb2e8f9f7 92 */
<> 144:ef7eb2e8f9f7 93 extern uint32_t LPUART_GetInstance(LPUART_Type *base);
<> 144:ef7eb2e8f9f7 94
<> 144:ef7eb2e8f9f7 95 /*******************************************************************************
<> 144:ef7eb2e8f9f7 96 * Code
<> 144:ef7eb2e8f9f7 97 ******************************************************************************/
<> 144:ef7eb2e8f9f7 98
<> 144:ef7eb2e8f9f7 99 static void LPUART_SendEDMACallback(edma_handle_t *handle, void *param, bool transferDone, uint32_t tcds)
<> 144:ef7eb2e8f9f7 100 {
<> 144:ef7eb2e8f9f7 101 lpuart_edma_private_handle_t *lpuartPrivateHandle = (lpuart_edma_private_handle_t *)param;
<> 144:ef7eb2e8f9f7 102
<> 144:ef7eb2e8f9f7 103 /* Avoid the warning for unused variables. */
<> 144:ef7eb2e8f9f7 104 handle = handle;
<> 144:ef7eb2e8f9f7 105 tcds = tcds;
<> 144:ef7eb2e8f9f7 106
<> 144:ef7eb2e8f9f7 107 if (transferDone)
<> 144:ef7eb2e8f9f7 108 {
<> 144:ef7eb2e8f9f7 109 LPUART_TransferAbortSendEDMA(lpuartPrivateHandle->base, lpuartPrivateHandle->handle);
<> 144:ef7eb2e8f9f7 110
<> 144:ef7eb2e8f9f7 111 if (lpuartPrivateHandle->handle->callback)
<> 144:ef7eb2e8f9f7 112 {
<> 144:ef7eb2e8f9f7 113 lpuartPrivateHandle->handle->callback(lpuartPrivateHandle->base, lpuartPrivateHandle->handle,
<> 144:ef7eb2e8f9f7 114 kStatus_LPUART_TxIdle, lpuartPrivateHandle->handle->userData);
<> 144:ef7eb2e8f9f7 115 }
<> 144:ef7eb2e8f9f7 116 }
<> 144:ef7eb2e8f9f7 117 }
<> 144:ef7eb2e8f9f7 118
<> 144:ef7eb2e8f9f7 119 static void LPUART_ReceiveEDMACallback(edma_handle_t *handle, void *param, bool transferDone, uint32_t tcds)
<> 144:ef7eb2e8f9f7 120 {
<> 144:ef7eb2e8f9f7 121 lpuart_edma_private_handle_t *lpuartPrivateHandle = (lpuart_edma_private_handle_t *)param;
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 /* Avoid warning for unused parameters. */
<> 144:ef7eb2e8f9f7 124 handle = handle;
<> 144:ef7eb2e8f9f7 125 tcds = tcds;
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 if (transferDone)
<> 144:ef7eb2e8f9f7 128 {
<> 144:ef7eb2e8f9f7 129 /* Disable transfer. */
<> 144:ef7eb2e8f9f7 130 LPUART_TransferAbortReceiveEDMA(lpuartPrivateHandle->base, lpuartPrivateHandle->handle);
<> 144:ef7eb2e8f9f7 131
<> 144:ef7eb2e8f9f7 132 if (lpuartPrivateHandle->handle->callback)
<> 144:ef7eb2e8f9f7 133 {
<> 144:ef7eb2e8f9f7 134 lpuartPrivateHandle->handle->callback(lpuartPrivateHandle->base, lpuartPrivateHandle->handle,
<> 144:ef7eb2e8f9f7 135 kStatus_LPUART_RxIdle, lpuartPrivateHandle->handle->userData);
<> 144:ef7eb2e8f9f7 136 }
<> 144:ef7eb2e8f9f7 137 }
<> 144:ef7eb2e8f9f7 138 }
<> 144:ef7eb2e8f9f7 139
<> 144:ef7eb2e8f9f7 140 void LPUART_TransferCreateHandleEDMA(LPUART_Type *base,
<> 144:ef7eb2e8f9f7 141 lpuart_edma_handle_t *handle,
<> 144:ef7eb2e8f9f7 142 lpuart_edma_transfer_callback_t callback,
<> 144:ef7eb2e8f9f7 143 void *userData,
<> 144:ef7eb2e8f9f7 144 edma_handle_t *txEdmaHandle,
<> 144:ef7eb2e8f9f7 145 edma_handle_t *rxEdmaHandle)
<> 144:ef7eb2e8f9f7 146 {
<> 144:ef7eb2e8f9f7 147 assert(handle);
<> 144:ef7eb2e8f9f7 148
<> 144:ef7eb2e8f9f7 149 uint32_t instance = LPUART_GetInstance(base);
<> 144:ef7eb2e8f9f7 150
<> 144:ef7eb2e8f9f7 151 s_edmaPrivateHandle[instance].base = base;
<> 144:ef7eb2e8f9f7 152 s_edmaPrivateHandle[instance].handle = handle;
<> 144:ef7eb2e8f9f7 153
<> 144:ef7eb2e8f9f7 154 memset(handle, 0, sizeof(*handle));
<> 144:ef7eb2e8f9f7 155
<> 144:ef7eb2e8f9f7 156 handle->rxState = kLPUART_RxIdle;
<> 144:ef7eb2e8f9f7 157 handle->txState = kLPUART_TxIdle;
<> 144:ef7eb2e8f9f7 158
<> 144:ef7eb2e8f9f7 159 handle->rxEdmaHandle = rxEdmaHandle;
<> 144:ef7eb2e8f9f7 160 handle->txEdmaHandle = txEdmaHandle;
<> 144:ef7eb2e8f9f7 161
<> 144:ef7eb2e8f9f7 162 handle->callback = callback;
<> 144:ef7eb2e8f9f7 163 handle->userData = userData;
<> 144:ef7eb2e8f9f7 164
<> 144:ef7eb2e8f9f7 165 #if defined(FSL_FEATURE_LPUART_HAS_FIFO) && FSL_FEATURE_LPUART_HAS_FIFO
<> 144:ef7eb2e8f9f7 166 /* Note:
<> 144:ef7eb2e8f9f7 167 Take care of the RX FIFO, EDMA request only assert when received bytes
<> 144:ef7eb2e8f9f7 168 equal or more than RX water mark, there is potential issue if RX water
<> 144:ef7eb2e8f9f7 169 mark larger than 1.
<> 144:ef7eb2e8f9f7 170 For example, if RX FIFO water mark is 2, upper layer needs 5 bytes and
<> 144:ef7eb2e8f9f7 171 5 bytes are received. the last byte will be saved in FIFO but not trigger
<> 144:ef7eb2e8f9f7 172 EDMA transfer because the water mark is 2.
<> 144:ef7eb2e8f9f7 173 */
<> 144:ef7eb2e8f9f7 174 if (rxEdmaHandle)
<> 144:ef7eb2e8f9f7 175 {
<> 144:ef7eb2e8f9f7 176 base->WATER &= (~LPUART_WATER_RXWATER_MASK);
<> 144:ef7eb2e8f9f7 177 }
<> 144:ef7eb2e8f9f7 178 #endif
<> 144:ef7eb2e8f9f7 179
<> 144:ef7eb2e8f9f7 180 /* Configure TX. */
<> 144:ef7eb2e8f9f7 181 if (txEdmaHandle)
<> 144:ef7eb2e8f9f7 182 {
<> 144:ef7eb2e8f9f7 183 EDMA_SetCallback(handle->txEdmaHandle, LPUART_SendEDMACallback, &s_edmaPrivateHandle[instance]);
<> 144:ef7eb2e8f9f7 184 }
<> 144:ef7eb2e8f9f7 185
<> 144:ef7eb2e8f9f7 186 /* Configure RX. */
<> 144:ef7eb2e8f9f7 187 if (rxEdmaHandle)
<> 144:ef7eb2e8f9f7 188 {
<> 144:ef7eb2e8f9f7 189 EDMA_SetCallback(handle->rxEdmaHandle, LPUART_ReceiveEDMACallback, &s_edmaPrivateHandle[instance]);
<> 144:ef7eb2e8f9f7 190 }
<> 144:ef7eb2e8f9f7 191 }
<> 144:ef7eb2e8f9f7 192 status_t LPUART_SendEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, lpuart_transfer_t *xfer)
<> 144:ef7eb2e8f9f7 193 {
<> 144:ef7eb2e8f9f7 194 assert(handle->txEdmaHandle);
<> 144:ef7eb2e8f9f7 195
<> 144:ef7eb2e8f9f7 196 edma_transfer_config_t xferConfig;
<> 144:ef7eb2e8f9f7 197 status_t status;
<> 144:ef7eb2e8f9f7 198
<> 144:ef7eb2e8f9f7 199 /* Return error if xfer invalid. */
<> 144:ef7eb2e8f9f7 200 if ((0U == xfer->dataSize) || (NULL == xfer->data))
<> 144:ef7eb2e8f9f7 201 {
<> 144:ef7eb2e8f9f7 202 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 203 }
<> 144:ef7eb2e8f9f7 204
<> 144:ef7eb2e8f9f7 205 /* If previous TX not finished. */
<> 144:ef7eb2e8f9f7 206 if (kLPUART_TxBusy == handle->txState)
<> 144:ef7eb2e8f9f7 207 {
<> 144:ef7eb2e8f9f7 208 status = kStatus_LPUART_TxBusy;
<> 144:ef7eb2e8f9f7 209 }
<> 144:ef7eb2e8f9f7 210 else
<> 144:ef7eb2e8f9f7 211 {
<> 144:ef7eb2e8f9f7 212 handle->txState = kLPUART_TxBusy;
<> 144:ef7eb2e8f9f7 213 handle->txDataSizeAll = xfer->dataSize;
<> 144:ef7eb2e8f9f7 214
<> 144:ef7eb2e8f9f7 215 /* Prepare transfer. */
<> 144:ef7eb2e8f9f7 216 EDMA_PrepareTransfer(&xferConfig, xfer->data, sizeof(uint8_t), (void *)LPUART_GetDataRegisterAddress(base),
<> 144:ef7eb2e8f9f7 217 sizeof(uint8_t), sizeof(uint8_t), xfer->dataSize, kEDMA_MemoryToPeripheral);
<> 144:ef7eb2e8f9f7 218
<> 144:ef7eb2e8f9f7 219 /* Submit transfer. */
<> 144:ef7eb2e8f9f7 220 EDMA_SubmitTransfer(handle->txEdmaHandle, &xferConfig);
<> 144:ef7eb2e8f9f7 221 EDMA_StartTransfer(handle->txEdmaHandle);
<> 144:ef7eb2e8f9f7 222
<> 144:ef7eb2e8f9f7 223 /* Enable LPUART TX EDMA. */
<> 144:ef7eb2e8f9f7 224 LPUART_EnableTxDMA(base, true);
<> 144:ef7eb2e8f9f7 225
<> 144:ef7eb2e8f9f7 226 status = kStatus_Success;
<> 144:ef7eb2e8f9f7 227 }
<> 144:ef7eb2e8f9f7 228
<> 144:ef7eb2e8f9f7 229 return status;
<> 144:ef7eb2e8f9f7 230 }
<> 144:ef7eb2e8f9f7 231
<> 144:ef7eb2e8f9f7 232 status_t LPUART_ReceiveEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, lpuart_transfer_t *xfer)
<> 144:ef7eb2e8f9f7 233 {
<> 144:ef7eb2e8f9f7 234 assert(handle->rxEdmaHandle);
<> 144:ef7eb2e8f9f7 235
<> 144:ef7eb2e8f9f7 236 edma_transfer_config_t xferConfig;
<> 144:ef7eb2e8f9f7 237 status_t status;
<> 144:ef7eb2e8f9f7 238
<> 144:ef7eb2e8f9f7 239 /* Return error if xfer invalid. */
<> 144:ef7eb2e8f9f7 240 if ((0U == xfer->dataSize) || (NULL == xfer->data))
<> 144:ef7eb2e8f9f7 241 {
<> 144:ef7eb2e8f9f7 242 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 243 }
<> 144:ef7eb2e8f9f7 244
<> 144:ef7eb2e8f9f7 245 /* If previous RX not finished. */
<> 144:ef7eb2e8f9f7 246 if (kLPUART_RxBusy == handle->rxState)
<> 144:ef7eb2e8f9f7 247 {
<> 144:ef7eb2e8f9f7 248 status = kStatus_LPUART_RxBusy;
<> 144:ef7eb2e8f9f7 249 }
<> 144:ef7eb2e8f9f7 250 else
<> 144:ef7eb2e8f9f7 251 {
<> 144:ef7eb2e8f9f7 252 handle->rxState = kLPUART_RxBusy;
<> 144:ef7eb2e8f9f7 253 handle->rxDataSizeAll = xfer->dataSize;
<> 144:ef7eb2e8f9f7 254
<> 144:ef7eb2e8f9f7 255 /* Prepare transfer. */
<> 144:ef7eb2e8f9f7 256 EDMA_PrepareTransfer(&xferConfig, (void *)LPUART_GetDataRegisterAddress(base), sizeof(uint8_t), xfer->data,
<> 144:ef7eb2e8f9f7 257 sizeof(uint8_t), sizeof(uint8_t), xfer->dataSize, kEDMA_PeripheralToMemory);
<> 144:ef7eb2e8f9f7 258
<> 144:ef7eb2e8f9f7 259 /* Submit transfer. */
<> 144:ef7eb2e8f9f7 260 EDMA_SubmitTransfer(handle->rxEdmaHandle, &xferConfig);
<> 144:ef7eb2e8f9f7 261 EDMA_StartTransfer(handle->rxEdmaHandle);
<> 144:ef7eb2e8f9f7 262
<> 144:ef7eb2e8f9f7 263 /* Enable LPUART RX EDMA. */
<> 144:ef7eb2e8f9f7 264 LPUART_EnableRxDMA(base, true);
<> 144:ef7eb2e8f9f7 265
<> 144:ef7eb2e8f9f7 266 status = kStatus_Success;
<> 144:ef7eb2e8f9f7 267 }
<> 144:ef7eb2e8f9f7 268
<> 144:ef7eb2e8f9f7 269 return status;
<> 144:ef7eb2e8f9f7 270 }
<> 144:ef7eb2e8f9f7 271
<> 144:ef7eb2e8f9f7 272 void LPUART_TransferAbortSendEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle)
<> 144:ef7eb2e8f9f7 273 {
<> 144:ef7eb2e8f9f7 274 assert(handle->txEdmaHandle);
<> 144:ef7eb2e8f9f7 275
<> 144:ef7eb2e8f9f7 276 /* Disable LPUART TX EDMA. */
<> 144:ef7eb2e8f9f7 277 LPUART_EnableTxDMA(base, false);
<> 144:ef7eb2e8f9f7 278
<> 144:ef7eb2e8f9f7 279 /* Stop transfer. */
<> 144:ef7eb2e8f9f7 280 EDMA_AbortTransfer(handle->txEdmaHandle);
<> 144:ef7eb2e8f9f7 281
<> 144:ef7eb2e8f9f7 282 handle->txState = kLPUART_TxIdle;
<> 144:ef7eb2e8f9f7 283 }
<> 144:ef7eb2e8f9f7 284
<> 144:ef7eb2e8f9f7 285 void LPUART_TransferAbortReceiveEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle)
<> 144:ef7eb2e8f9f7 286 {
<> 144:ef7eb2e8f9f7 287 assert(handle->rxEdmaHandle);
<> 144:ef7eb2e8f9f7 288
<> 144:ef7eb2e8f9f7 289 /* Disable LPUART RX EDMA. */
<> 144:ef7eb2e8f9f7 290 LPUART_EnableRxDMA(base, false);
<> 144:ef7eb2e8f9f7 291
<> 144:ef7eb2e8f9f7 292 /* Stop transfer. */
<> 144:ef7eb2e8f9f7 293 EDMA_AbortTransfer(handle->rxEdmaHandle);
<> 144:ef7eb2e8f9f7 294
<> 144:ef7eb2e8f9f7 295 handle->rxState = kLPUART_RxIdle;
<> 144:ef7eb2e8f9f7 296 }
<> 144:ef7eb2e8f9f7 297
<> 144:ef7eb2e8f9f7 298 status_t LPUART_TransferGetReceiveCountEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, uint32_t *count)
<> 144:ef7eb2e8f9f7 299 {
<> 144:ef7eb2e8f9f7 300 assert(handle->rxEdmaHandle);
<> 144:ef7eb2e8f9f7 301
<> 144:ef7eb2e8f9f7 302 if (kLPUART_RxIdle == handle->rxState)
<> 144:ef7eb2e8f9f7 303 {
<> 144:ef7eb2e8f9f7 304 return kStatus_NoTransferInProgress;
<> 144:ef7eb2e8f9f7 305 }
<> 144:ef7eb2e8f9f7 306
<> 144:ef7eb2e8f9f7 307 if (!count)
<> 144:ef7eb2e8f9f7 308 {
<> 144:ef7eb2e8f9f7 309 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 310 }
<> 144:ef7eb2e8f9f7 311
<> 144:ef7eb2e8f9f7 312 *count = handle->rxDataSizeAll - EDMA_GetRemainingBytes(handle->rxEdmaHandle->base, handle->rxEdmaHandle->channel);
<> 144:ef7eb2e8f9f7 313
<> 144:ef7eb2e8f9f7 314 return kStatus_Success;
<> 144:ef7eb2e8f9f7 315 }
<> 144:ef7eb2e8f9f7 316
<> 144:ef7eb2e8f9f7 317 status_t LPUART_TransferGetSendCountEDMA(LPUART_Type *base, lpuart_edma_handle_t *handle, uint32_t *count)
<> 144:ef7eb2e8f9f7 318 {
<> 144:ef7eb2e8f9f7 319 assert(handle->txEdmaHandle);
<> 144:ef7eb2e8f9f7 320
<> 144:ef7eb2e8f9f7 321 if (kLPUART_TxIdle == handle->txState)
<> 144:ef7eb2e8f9f7 322 {
<> 144:ef7eb2e8f9f7 323 return kStatus_NoTransferInProgress;
<> 144:ef7eb2e8f9f7 324 }
<> 144:ef7eb2e8f9f7 325
<> 144:ef7eb2e8f9f7 326 if (!count)
<> 144:ef7eb2e8f9f7 327 {
<> 144:ef7eb2e8f9f7 328 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 329 }
<> 144:ef7eb2e8f9f7 330
<> 144:ef7eb2e8f9f7 331 *count = handle->txDataSizeAll - EDMA_GetRemainingBytes(handle->txEdmaHandle->base, handle->txEdmaHandle->channel);
<> 144:ef7eb2e8f9f7 332
<> 144:ef7eb2e8f9f7 333 return kStatus_Success;
<> 144:ef7eb2e8f9f7 334 }