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- enum _usart_status
- {
- kStatus_USART_TxBusy = MAKE_STATUS(kStatusGroup_LPC_USART, 0),
- kStatus_USART_RxBusy = MAKE_STATUS(kStatusGroup_LPC_USART, 1),
- kStatus_USART_TxIdle = MAKE_STATUS(kStatusGroup_LPC_USART, 2),
- kStatus_USART_RxIdle = MAKE_STATUS(kStatusGroup_LPC_USART, 3),
- kStatus_USART_TxError = MAKE_STATUS(kStatusGroup_LPC_USART, 7),
- kStatus_USART_RxError = MAKE_STATUS(kStatusGroup_LPC_USART, 9),
- kStatus_USART_RxRingBufferOverrun = MAKE_STATUS(kStatusGroup_LPC_USART, 8),
- kStatus_USART_NoiseError = MAKE_STATUS(kStatusGroup_LPC_USART, 10),
- kStatus_USART_FramingError = MAKE_STATUS(kStatusGroup_LPC_USART, 11),
- kStatus_USART_ParityError = MAKE_STATUS(kStatusGroup_LPC_USART, 12),
- kStatus_USART_BaudrateNotSupport =
- MAKE_STATUS(kStatusGroup_LPC_USART, 13),
- };
- typedef enum _usart_parity_mode
- {
- kUSART_ParityDisabled = 0x0U,
- kUSART_ParityEven = 0x2U,
- kUSART_ParityOdd = 0x3U,
- } usart_parity_mode_t;
- typedef enum _usart_stop_bit_count
- {
- kUSART_OneStopBit = 0U,
- kUSART_TwoStopBit = 1U,
- } usart_stop_bit_count_t;
- typedef enum _usart_data_len
- {
- kUSART_7BitsPerChar = 0U,
- kUSART_8BitsPerChar = 1U,
- } usart_data_len_t;
- typedef enum _usart_txfifo_watermark
- {
- kUSART_TxFifo0 = 0,
- kUSART_TxFifo1 = 1,
- kUSART_TxFifo2 = 2,
- kUSART_TxFifo3 = 3,
- kUSART_TxFifo4 = 4,
- kUSART_TxFifo5 = 5,
- kUSART_TxFifo6 = 6,
- kUSART_TxFifo7 = 7,
- } usart_txfifo_watermark_t;
- typedef enum _usart_rxfifo_watermark
- {
- kUSART_RxFifo1 = 0,
- kUSART_RxFifo2 = 1,
- kUSART_RxFifo3 = 2,
- kUSART_RxFifo4 = 3,
- kUSART_RxFifo5 = 4,
- kUSART_RxFifo6 = 5,
- kUSART_RxFifo7 = 6,
- kUSART_RxFifo8 = 7,
- } usart_rxfifo_watermark_t;
- enum _usart_interrupt_enable
- {
- kUSART_TxErrorInterruptEnable = (USART_FIFOINTENSET_TXERR_MASK),
- kUSART_RxErrorInterruptEnable = (USART_FIFOINTENSET_RXERR_MASK),
- kUSART_TxLevelInterruptEnable = (USART_FIFOINTENSET_TXLVL_MASK),
- kUSART_RxLevelInterruptEnable = (USART_FIFOINTENSET_RXLVL_MASK),
- };
- enum _usart_flags
- {
- kUSART_TxError = (USART_FIFOSTAT_TXERR_MASK),
- kUSART_RxError = (USART_FIFOSTAT_RXERR_MASK),
- kUSART_TxFifoEmptyFlag = (USART_FIFOSTAT_TXEMPTY_MASK),
- kUSART_TxFifoNotFullFlag = (USART_FIFOSTAT_TXNOTFULL_MASK),
- kUSART_RxFifoNotEmptyFlag = (USART_FIFOSTAT_RXNOTEMPTY_MASK),
- kUSART_RxFifoFullFlag = (USART_FIFOSTAT_RXFULL_MASK),
- };
- typedef struct _usart_config
- {
- uint32_t baudRate_Bps;
- usart_parity_mode_t parityMode;
- usart_stop_bit_count_t stopBitCount;
- usart_data_len_t bitCountPerChar;
- bool loopback;
- bool enableRx;
- bool enableTx;
- usart_txfifo_watermark_t txWatermark;
- usart_rxfifo_watermark_t rxWatermark;
- } usart_config_t;
- typedef struct _usart_transfer
- {
- uint8_t *data;
- size_t dataSize;
- } usart_transfer_t;
- typedef struct _usart_handle usart_handle_t;
- typedef void (*usart_transfer_callback_t)(USART_Type *base, usart_handle_t *handle, status_t status, void *userData);
- struct _usart_handle
- {
- uint8_t *volatile txData;
- volatile size_t txDataSize;
- size_t txDataSizeAll;
- uint8_t *volatile rxData;
- volatile size_t rxDataSize;
- size_t rxDataSizeAll;
- uint8_t *rxRingBuffer;
- size_t rxRingBufferSize;
- volatile uint16_t rxRingBufferHead;
- volatile uint16_t rxRingBufferTail;
- usart_transfer_callback_t callback;
- void *userData;
- volatile uint8_t txState;
- volatile uint8_t rxState;
- usart_txfifo_watermark_t txWatermark;
- usart_rxfifo_watermark_t rxWatermark;
- };
- extern "C" {
- uint32_t USART_GetInstance(USART_Type *base);
- status_t USART_Init(USART_Type *base, const usart_config_t *config, uint32_t srcClock_Hz);
- void USART_Deinit(USART_Type *base);
- void USART_GetDefaultConfig(usart_config_t *config);
- status_t USART_SetBaudRate(USART_Type *base, uint32_t baudrate_Bps, uint32_t srcClock_Hz);
- static inline uint32_t USART_GetStatusFlags(USART_Type *base)
- {
- return base->FIFOSTAT;
- }
- static inline void USART_ClearStatusFlags(USART_Type *base, uint32_t mask)
- {
-
- base->FIFOSTAT = mask & (USART_FIFOSTAT_TXERR_MASK | USART_FIFOSTAT_RXERR_MASK);
- }
- static inline void USART_EnableInterrupts(USART_Type *base, uint32_t mask)
- {
- base->FIFOINTENSET = mask & 0xF;
- }
- static inline void USART_DisableInterrupts(USART_Type *base, uint32_t mask)
- {
- base->FIFOINTENCLR = mask & 0xF;
- }
- static inline uint32_t USART_GetEnabledInterrupts(USART_Type *base)
- {
- return base->FIFOINTENSET;
- }
- static inline void USART_EnableTxDMA(USART_Type *base, bool enable)
- {
- if (enable)
- {
- base->FIFOCFG |= USART_FIFOCFG_DMATX_MASK;
- }
- else
- {
- base->FIFOCFG &= ~(USART_FIFOCFG_DMATX_MASK);
- }
- }
- static inline void USART_EnableRxDMA(USART_Type *base, bool enable)
- {
- if (enable)
- {
- base->FIFOCFG |= USART_FIFOCFG_DMARX_MASK;
- }
- else
- {
- base->FIFOCFG &= ~(USART_FIFOCFG_DMARX_MASK);
- }
- }
- static inline void USART_EnableCTS(USART_Type *base, bool enable)
- {
- if (enable)
- {
- base->CFG |= USART_CFG_CTSEN_MASK;
- }
- else
- {
- base->CFG &= ~USART_CFG_CTSEN_MASK;
- }
- }
- static inline void USART_WriteByte(USART_Type *base, uint8_t data)
- {
- base->FIFOWR = data;
- }
- static inline uint8_t USART_ReadByte(USART_Type *base)
- {
- return base->FIFORD;
- }
- void USART_WriteBlocking(USART_Type *base, const uint8_t *data, size_t length);
- status_t USART_ReadBlocking(USART_Type *base, uint8_t *data, size_t length);
- status_t USART_TransferCreateHandle(USART_Type *base,
- usart_handle_t *handle,
- usart_transfer_callback_t callback,
- void *userData);
- status_t USART_TransferSendNonBlocking(USART_Type *base, usart_handle_t *handle, usart_transfer_t *xfer);
- void USART_TransferStartRingBuffer(USART_Type *base,
- usart_handle_t *handle,
- uint8_t *ringBuffer,
- size_t ringBufferSize);
- void USART_TransferStopRingBuffer(USART_Type *base, usart_handle_t *handle);
- size_t USART_TransferGetRxRingBufferLength(usart_handle_t *handle);
- void USART_TransferAbortSend(USART_Type *base, usart_handle_t *handle);
- status_t USART_TransferGetSendCount(USART_Type *base, usart_handle_t *handle, uint32_t *count);
- status_t USART_TransferReceiveNonBlocking(USART_Type *base,
- usart_handle_t *handle,
- usart_transfer_t *xfer,
- size_t *receivedBytes);
- void USART_TransferAbortReceive(USART_Type *base, usart_handle_t *handle);
- status_t USART_TransferGetReceiveCount(USART_Type *base, usart_handle_t *handle, uint32_t *count);
- void USART_TransferHandleIRQ(USART_Type *base, usart_handle_t *handle);
- }
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