/* * Copyright : (C) 2022 Phytium Information Technology, Inc. * All Rights Reserved. * * This program is OPEN SOURCE software: you can redistribute it and/or modify it * under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd, * either version 1.0 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the Phytium Public License for more details. * * * FilePath: fpl011.c * Date: 2022-02-10 14:53:42 * LastEditTime: 2022-02-18 09:07:24 * Description:  This files is for uart functions * * Modify History: * Ver   Who        Date         Changes * ----- ------     --------    -------------------------------------- */ /***************************** Include Files ********************************/ #include "fpl011.h" #include "fio.h" #include "ferror_code.h" /************************** Constant Definitions *****************************/ /**************************** Type Definitions *******************************/ /***************** Macros (Inline Functions) Definitions *********************/ /************************** Function Prototypes ******************************/ u32 FPl011SendBuffer(FPl011 *uart_p); u32 FPl011ReceiveBuffer(FPl011 *uart_p); static void FPl011StubHandler(void *Args, u32 Event, u32 ByteCount); /*****************************************************************************/ FError FPl011CfgInitialize(FPl011 *uart_p, FPl011Config *config) { u32 reg_value = 0; FError ret ; FASSERT(uart_p != NULL); FASSERT(config != NULL); uart_p->config.instance_id = config->instance_id; uart_p->config.base_address = config->base_address; uart_p->config.ref_clock_hz = config->ref_clock_hz; uart_p->config.irq_num = config->irq_num; uart_p->config.baudrate = config->baudrate; uart_p->handler = FPl011StubHandler; uart_p->send_buffer.byte_p = NULL; uart_p->send_buffer.requested_bytes = 0; uart_p->send_buffer.remaining_bytes = 0; uart_p->receive_buffer.byte_p = NULL; uart_p->receive_buffer.requested_bytes = 0; uart_p->receive_buffer.remaining_bytes = 0; uart_p->rxbs_error = 0; uart_p->is_ready = FT_COMPONENT_IS_READY; ret = FPl011SetBaudRate(uart_p, uart_p->config.baudrate); if (ret != FT_SUCCESS) { uart_p->is_ready = 0U; } else { /* * Set up the default data format: 8 bit data, 1 stop bit, no * parity */ reg_value = ((FPL011_FORMAT_WORDLENGTH_8BIT << 5) & FPL011LCR_H_WLEN); //config.base_address, FPL011LCR_H_OFFSET, reg_value); /* Set the RX FIFO trigger at 8 data bytes.Tx FIFO trigger is 8 data bytes*/ reg_value = (1 << 3) | (1 << 0); FUART_WRITEREG32(uart_p->config.base_address, FPL011IFLS_OFFSET, reg_value); /* Disable all interrupts, polled mode is the default */ reg_value = 0; FUART_WRITEREG32(uart_p->config.base_address, FPL011IMSC_OFFSET, reg_value); } return FT_SUCCESS; } /** * @name: FPl011Send * @msg: This functions sends the specified buffer using the device in either * polled or interrupt driven mode. * @return The number of bytes actually sent. * @param uart_p is a pointer to the FPl011 instance. * @param byte_p is pointer to a buffer of data to be sent. * @param length ontains the number of bytes to be sent. Any data that was already put into the * transmit FIFO will be sent. */ u32 FPl011Send(FPl011 *uart_p, u8 *byte_p, u32 length) { u32 sent_count = 0; FASSERT(uart_p != NULL); FASSERT(byte_p != NULL); FASSERT(uart_p->is_ready == FT_COMPONENT_IS_READY); uart_p->send_buffer.byte_p = byte_p; uart_p->send_buffer.requested_bytes = length; uart_p->send_buffer.remaining_bytes = length; sent_count = FPl011SendBuffer(uart_p); return sent_count; } static void FPl011StubHandler(void *args, u32 event, u32 byte_count) { (void)args; (void)event; (void)byte_count; FASSERT(0); } /** * @name: FPl011SendBuffer * @msg: send data buffer through uart * @return {*} * @param uart_p */ u32 FPl011SendBuffer(FPl011 *uart_p) { u32 sent_count = 0U; u32 isbusy; isbusy = (u32)FUART_ISTRANSMITBUSY(uart_p->config.base_address); while (isbusy == TRUE) { isbusy = (u32)FUART_ISTRANSMITBUSY(uart_p->config.base_address); } /* * If the TX FIFO is full, send nothing. * Otherwise put bytes into the TX FIFO unil it is full, or all of the * data has been put into the FIFO. */ while ((!FUART_ISTRANSMITFULL(uart_p->config.base_address)) && (uart_p->send_buffer.remaining_bytes > sent_count)) { FUART_WRITEREG32(uart_p->config.base_address, FPL011DR_OFFSET, (u32)uart_p->send_buffer.byte_p[sent_count]); sent_count++; } /* Update the buffer to reflect the bytes that were sent from it */ uart_p->send_buffer.byte_p += sent_count; uart_p->send_buffer.remaining_bytes -= sent_count; return sent_count; } /** * @name: FPl011Receive * @msg: This function attempts to receive a specified number of bytes of data * from the device and store it into the specified buffer. * @param uart_p is a pointer to the FPl011 instance * @param byte_p is pointer to buffer for data to be received into * @param length is the number of bytes to be received. * @return The number of bytes received. */ u32 FPl011Receive(FPl011 *uart_p, u8 *byte_p, u32 length) { u32 received; FASSERT(uart_p != NULL); FASSERT(byte_p != NULL); FASSERT(uart_p->is_ready == FT_COMPONENT_IS_READY); uart_p->receive_buffer.byte_p = byte_p; uart_p->receive_buffer.requested_bytes = length; uart_p->receive_buffer.remaining_bytes = length; received = FPl011ReceiveBuffer(uart_p); return received; } u32 FPl011ReceiveBuffer(FPl011 *uart_p) { u32 received_count = 0U; u32 event; u32 event_data; u32 byte_value; while ((received_count < uart_p->receive_buffer.remaining_bytes) && !FUART_ISRECEIVEDATA(uart_p->config.base_address)) { byte_value = FUART_READREG32(uart_p->config.base_address, FPL011DR_OFFSET); if (uart_p->rxbs_error) { if ((byte_value & FPL011DR_ALLE) != 0) { event_data = byte_value; event = FPL011_EVENT_PARE_FRAME_BRKE; if (uart_p->handler) { uart_p->handler(uart_p->args, event, event_data); } } } uart_p->receive_buffer.byte_p[received_count] = (u8)(byte_value & 0xff); received_count++; } uart_p->rxbs_error = 0; if (uart_p->receive_buffer.byte_p != NULL) { uart_p->receive_buffer.byte_p += received_count; } uart_p->receive_buffer.remaining_bytes -= received_count; return received_count; } /** * @name: FPl011BlockSend * @msg: initiate uart block send * @return {*} * @param uart_p * @param byte_p * @param length */ void FPl011BlockSend(FPl011 *uart_p, u8 *byte_p, u32 length) { u32 index; FASSERT(uart_p != NULL); FASSERT(byte_p != NULL); FASSERT(uart_p->is_ready == FT_COMPONENT_IS_READY); for (index = 0; index < length; index++) { FPl011SendByte(uart_p->config.base_address, byte_p[index]); } } /** * @name: FPl011BlockReceive * @msg: initiate uart block receive * @return {*} * @param uart_p */ u8 FPl011BlockReceive(FPl011 *uart_p) { FASSERT(uart_p != NULL); FASSERT(uart_p->is_ready == FT_COMPONENT_IS_READY); return FPl011RecvByte(uart_p->config.base_address); } void FPl011IrqClearReciveTimeOut(FPl011 *uart_p) { u32 reg_temp; reg_temp = FPl011GetInterruptMask(uart_p); reg_temp &= ~FPL011MIS_RTMIS; FPl011SetInterruptMask(uart_p, reg_temp); } void FPl011IrqEnableReciveTimeOut(FPl011 *uart_p) { u32 reg_temp; reg_temp = FPl011GetInterruptMask(uart_p); reg_temp |= FPL011MIS_RTMIS; FPl011SetInterruptMask(uart_p, reg_temp); }