forked from xuos/xiuos
add ImxrtCh438WriteData for ch438 on nuttx
This commit is contained in:
wgzAIIT
parent
2b40ba4d1a
commit
64109b5120
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@ -21,27 +21,30 @@
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#include "imxrt_ch438.h"
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#define CH438PORTNUM 8
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#define BUFFERSIZE 128
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#define CH438_BUFFSIZE 256
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static void ImxrtCH438Init(void);
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static void CH438PortInit(uint8_t ext_uart_no, uint32_t baud_rate);
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static int getInterruptStatus(int argc, char **argv);
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static void CH438SetOutput(void);
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static void CH438SetInput(void);
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static uint8_t ReadCH438Data(uint8_t addr);
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static void WriteCH438Data(uint8_t addr, uint8_t dat);
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static void WriteCH438Block(uint8_t mAddr, uint8_t mLen, char *mBuf);
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static uint8_t CH438UARTRcv(uint8_t ext_uart_no, char *buf);
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static void Ch438UartSend(uint8_t ext_uart_no, char *Data, uint16_t Num);
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uint8_t CH438UARTRcv(uint8_t ext_uart_no, char* buf);
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static void ImxrtCH438Init(void);
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static void CH438PortInit(uint8_t ext_uart_no, uint32_t baud_rate);
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static int ImxrtCh438WriteData(uint8_t ext_uart_no, char *write_buffer, size_t size);
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static size_t ImxrtCh438ReadData(uint8_t ext_uart_no);
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static void CH438UARTSend(uint8_t ext_uart_no, char *Data, uint8_t Num);
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static void Ch438InitDefault(void);
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static int ch438_open(FAR struct file *filep);
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static int ch438_close(FAR struct file *filep);
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static ssize_t ch438_read(FAR struct file *filep, FAR char *buffer, size_t buflen);
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static ssize_t ch438_write(FAR struct file *filep, FAR const char *buffer, size_t buflen);
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static int ch438_register(FAR const char *devpath, uint8_t ext_uart_no);
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/****************************************************************************
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* Private type
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@ -80,7 +83,7 @@ static pthread_cond_t cond[CH438PORTNUM] =
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volatile int done[CH438PORTNUM] = {0};
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static char buff[CH438PORTNUM][BUFFERSIZE];
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static char buff[CH438PORTNUM][CH438_BUFFSIZE];
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static uint8_t buff_ptr[CH438PORTNUM];
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static uint8_t Interruptnum[CH438PORTNUM] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,}; /* SSR寄存器中断号对应值 */
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static uint8_t offsetadd[CH438PORTNUM] = {0x00,0x10,0x20,0x30,0x08,0x18,0x28,0x38,}; /* 串口号的偏移地址 */
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@ -106,7 +109,7 @@ static const struct file_operations g_ch438fops =
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* thread task getInterruptStatus
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*
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****************************************************************************/
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int getInterruptStatus(int argc, char **argv)
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static int getInterruptStatus(int argc, char **argv)
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{
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uint8_t ext_uart_no = 0;
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while(1)
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@ -148,7 +151,6 @@ static void CH438SetOutput(void)
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imxrt_config_gpio(CH438_D5_PIN_OUT);
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imxrt_config_gpio(CH438_D6_PIN_OUT);
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imxrt_config_gpio(CH438_D7_PIN_OUT);
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}
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/****************************************************************************
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@ -170,73 +172,6 @@ static void CH438SetInput(void)
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imxrt_config_gpio(CH438_D7_PIN_INPUT);
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}
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/****************************************************************************
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* Name: ImxrtCH438Init
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*
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* Description:
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* ch438 initialization
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*
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****************************************************************************/
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static void ImxrtCH438Init(void)
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{
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CH438SetOutput();
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imxrt_config_gpio(CH438_NWR_PIN);
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imxrt_config_gpio(CH438_NRD_PIN);
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imxrt_config_gpio(CH438_ALE_PIN);
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imxrt_gpio_write(CH438_NWR_PIN,true);
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imxrt_gpio_write(CH438_NRD_PIN,true);
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imxrt_gpio_write(CH438_ALE_PIN,true);
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}
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/****************************************************************************
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* Name: CH438PortInit
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*
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* Description:
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* ch438 port initialization
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*
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****************************************************************************/
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static void CH438PortInit(uint8_t ext_uart_no, uint32_t baud_rate)
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{
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uint32_t div;
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uint8_t DLL,DLM,dlab;
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uint8_t REG_LCR_ADDR;
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uint8_t REG_DLL_ADDR;
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uint8_t REG_DLM_ADDR;
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uint8_t REG_IER_ADDR;
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uint8_t REG_MCR_ADDR;
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uint8_t REG_FCR_ADDR;
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REG_LCR_ADDR = offsetadd[ext_uart_no] | REG_LCR0_ADDR;
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REG_DLL_ADDR = offsetadd[ext_uart_no] | REG_DLL0_ADDR;
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REG_DLM_ADDR = offsetadd[ext_uart_no] | REG_DLM0_ADDR;
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REG_IER_ADDR = offsetadd[ext_uart_no] | REG_IER0_ADDR;
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REG_MCR_ADDR = offsetadd[ext_uart_no] | REG_MCR0_ADDR;
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REG_FCR_ADDR = offsetadd[ext_uart_no] | REG_FCR0_ADDR;
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WriteCH438Data(REG_IER_ADDR, BIT_IER_RESET); /* 复位该串口 */
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up_mdelay(50);
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dlab = ReadCH438Data(REG_IER_ADDR);
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dlab &= 0xDF;
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WriteCH438Data(REG_IER_ADDR, dlab);
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dlab = ReadCH438Data(REG_LCR_ADDR);
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dlab |= 0x80; //置LCR寄存器DLAB位为1
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WriteCH438Data(REG_LCR_ADDR, dlab);
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div = ( Fpclk >> 4 ) / baud_rate;
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DLM = div >> 8;
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DLL = div & 0xff;
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WriteCH438Data(REG_DLL_ADDR, DLL); /* 设置波特率 */
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WriteCH438Data(REG_DLM_ADDR, DLM);
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WriteCH438Data(REG_FCR_ADDR, BIT_FCR_RECVTG1 | BIT_FCR_RECVTG0 | BIT_FCR_FIFOEN); /* 设置FIFO模式，触发点为112字节 */
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WriteCH438Data(REG_LCR_ADDR, BIT_LCR_WORDSZ1 | BIT_LCR_WORDSZ0 ); /* 字长8位，1位停止位、无校验 */
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WriteCH438Data(REG_IER_ADDR, BIT_IER_IERECV); /* 使能中断 */
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WriteCH438Data(REG_MCR_ADDR, BIT_MCR_OUT2);// | BIT_MCR_RTS | BIT_MCR_DTR ); /* 允许中断输出,DTR,RTS为1 */
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WriteCH438Data(REG_FCR_ADDR, ReadCH438Data(REG_FCR_ADDR)| BIT_FCR_TFIFORST); /* 清空FIFO中的数据 */
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}
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/****************************************************************************
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* Name: ReadCH438Data
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*
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@ -288,7 +223,6 @@ static uint8_t ReadCH438Data(uint8_t addr)
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up_udelay(1);
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return dat;
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}
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/****************************************************************************
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@ -357,6 +291,37 @@ static void WriteCH438Block(uint8_t mAddr, uint8_t mLen, char *mBuf)
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WriteCH438Data(mAddr, *mBuf++);
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}
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/****************************************************************************
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* Name: CH438UARTSend
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*
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* Description:
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* Enable FIFO mode, which is used for ch438 serial port to send multi byte data,
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* with a maximum of 128 bytes of data sent at a time
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*
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****************************************************************************/
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static void Ch438UartSend(uint8_t ext_uart_no, char *Data, uint16_t Num)
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{
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uint8_t REG_LSR_ADDR,REG_THR_ADDR;
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REG_LSR_ADDR = offsetadd[ext_uart_no] | REG_LSR0_ADDR;
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REG_THR_ADDR = offsetadd[ext_uart_no] | REG_THR0_ADDR;
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while(1)
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{
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while((ReadCH438Data(REG_LSR_ADDR) & BIT_LSR_TEMT ) == 0); /* 等待数据发送完毕，THR,TSR全空 */
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if(Num <= CH438_BUFFSIZE)
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{
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WriteCH438Block(REG_THR_ADDR, Num, Data);
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break;
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}
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else
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{
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WriteCH438Block(REG_THR_ADDR, 128, Data);
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Num -= CH438_BUFFSIZE;
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Data += CH438_BUFFSIZE;
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}
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}
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}
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/****************************************************************************
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* Name: CH438UARTRcv
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*
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@ -373,14 +338,15 @@ uint8_t CH438UARTRcv(uint8_t ext_uart_no, char* buf)
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REG_LSR_ADDR = offsetadd[ext_uart_no] | REG_LSR0_ADDR;
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REG_RBR_ADDR = offsetadd[ext_uart_no] | REG_RBR0_ADDR;
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while((ReadCH438Data(REG_LSR_ADDR) & BIT_LSR_DATARDY) == 0 ); /* 等待数据准备好 */
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/* Wait for the data to be ready */
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while((ReadCH438Data(REG_LSR_ADDR) & BIT_LSR_DATARDY) == 0 );
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while((ReadCH438Data(REG_LSR_ADDR) & BIT_LSR_DATARDY) == 0x01 )
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{
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dat = ReadCH438Data(REG_RBR_ADDR);
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buff[ext_uart_no][buff_ptr[ext_uart_no]] = dat;
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buff_ptr[ext_uart_no] = buff_ptr[ext_uart_no] + 1;
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if (buff_ptr[ext_uart_no] == BUFFERSIZE)
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if (buff_ptr[ext_uart_no] == CH438_BUFFSIZE)
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buff_ptr[ext_uart_no] = 0;
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RcvNum = RcvNum + 1;
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}
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@ -388,34 +354,130 @@ uint8_t CH438UARTRcv(uint8_t ext_uart_no, char* buf)
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}
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/****************************************************************************
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* Name: CH438UARTSend
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* Name: ImxrtCH438Init
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*
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* Description:
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* Enable FIFO mode, which is used for ch438 serial port to send multi byte data,
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* with a maximum of 128 bytes of data sent at a time
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* ch438 initialization
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*
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****************************************************************************/
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static void CH438UARTSend(uint8_t ext_uart_no, char *Data, uint8_t Num)
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****************************************************************************/
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static void ImxrtCH438Init(void)
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{
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uint8_t REG_LSR_ADDR,REG_THR_ADDR;
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REG_LSR_ADDR = offsetadd[ext_uart_no] | REG_LSR0_ADDR;
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REG_THR_ADDR = offsetadd[ext_uart_no] | REG_THR0_ADDR;
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CH438SetOutput();
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imxrt_config_gpio(CH438_NWR_PIN);
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imxrt_config_gpio(CH438_NRD_PIN);
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imxrt_config_gpio(CH438_ALE_PIN);
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while(1)
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{
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while((ReadCH438Data(REG_LSR_ADDR) & BIT_LSR_TEMT ) == 0); /* 等待数据发送完毕，THR,TSR全空 */
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if(Num <= BUFFERSIZE)
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{
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WriteCH438Block(REG_THR_ADDR, Num, Data);
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break;
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}
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else
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{
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WriteCH438Block(REG_THR_ADDR, BUFFERSIZE, Data);
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Num -= BUFFERSIZE;
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Data += BUFFERSIZE;
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}
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}
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imxrt_gpio_write(CH438_NWR_PIN,true);
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imxrt_gpio_write(CH438_NRD_PIN,true);
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imxrt_gpio_write(CH438_ALE_PIN,true);
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}
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/****************************************************************************
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* Name: CH438PortInit
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*
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* Description:
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* ch438 port initialization
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*
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****************************************************************************/
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static void CH438PortInit(uint8_t ext_uart_no, uint32_t baud_rate)
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{
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uint32_t div;
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uint8_t DLL,DLM,dlab;
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uint8_t REG_LCR_ADDR;
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uint8_t REG_DLL_ADDR;
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uint8_t REG_DLM_ADDR;
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uint8_t REG_IER_ADDR;
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uint8_t REG_MCR_ADDR;
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uint8_t REG_FCR_ADDR;
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REG_LCR_ADDR = offsetadd[ext_uart_no] | REG_LCR0_ADDR;
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REG_DLL_ADDR = offsetadd[ext_uart_no] | REG_DLL0_ADDR;
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REG_DLM_ADDR = offsetadd[ext_uart_no] | REG_DLM0_ADDR;
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REG_IER_ADDR = offsetadd[ext_uart_no] | REG_IER0_ADDR;
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REG_MCR_ADDR = offsetadd[ext_uart_no] | REG_MCR0_ADDR;
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REG_FCR_ADDR = offsetadd[ext_uart_no] | REG_FCR0_ADDR;
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/* reset the uart */
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WriteCH438Data(REG_IER_ADDR, BIT_IER_RESET);
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up_mdelay(50);
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dlab = ReadCH438Data(REG_IER_ADDR);
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dlab &= 0xDF;
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WriteCH438Data(REG_IER_ADDR, dlab);
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/* set LCR register DLAB bit 1 */
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dlab = ReadCH438Data(REG_LCR_ADDR);
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dlab |= 0x80;
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WriteCH438Data(REG_LCR_ADDR, dlab);
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div = ( Fpclk >> 4 ) / baud_rate;
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DLM = div >> 8;
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DLL = div & 0xff;
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/* set bps */
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WriteCH438Data(REG_DLL_ADDR, DLL);
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WriteCH438Data(REG_DLM_ADDR, DLM);
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/* set FIFO mode, 112 bytes */
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WriteCH438Data(REG_FCR_ADDR, BIT_FCR_RECVTG1 | BIT_FCR_RECVTG0 | BIT_FCR_FIFOEN);
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/* 8 bit word size, 1 bit stop bit, no crc */
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WriteCH438Data(REG_LCR_ADDR, BIT_LCR_WORDSZ1 | BIT_LCR_WORDSZ0);
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/* enable interrupt */
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WriteCH438Data(REG_IER_ADDR, BIT_IER_IERECV);
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/* allow interrupt output, DTR and RTS is 1 */
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WriteCH438Data(REG_MCR_ADDR, BIT_MCR_OUT2);
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/* release the data in FIFO */
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WriteCH438Data(REG_FCR_ADDR, ReadCH438Data(REG_FCR_ADDR)| BIT_FCR_TFIFORST);
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}
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/****************************************************************************
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* Name: ImxrtCh438ReadData
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*
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* Description:
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* Read data from ch438 port
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*
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****************************************************************************/
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static int ImxrtCh438WriteData(uint8_t ext_uart_no, char *write_buffer, size_t size)
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{
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int write_len, write_len_continue;
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int i, write_index;
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DEBUGASSERT(write_buffer != NULL);
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write_len = size;;
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write_len_continue = size;
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if (write_len > CH438_BUFFSIZE)
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{
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if (0 == write_len % CH438_BUFFSIZE)
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{
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write_index = write_len / CH438_BUFFSIZE;
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for (i = 0; i < write_index; i ++)
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{
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Ch438UartSend(ext_uart_no, write_buffer + i * CH438_BUFFSIZE, CH438_BUFFSIZE);
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}
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}
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else
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{
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write_index = 0;
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while (write_len_continue > CH438_BUFFSIZE)
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{
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Ch438UartSend(ext_uart_no, write_buffer + write_index * CH438_BUFFSIZE, CH438_BUFFSIZE);
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write_index++;
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write_len_continue = write_len - write_index * CH438_BUFFSIZE;
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}
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Ch438UartSend(ext_uart_no, write_buffer + write_index * CH438_BUFFSIZE, write_len_continue);
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}
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}
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else
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{
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Ch438UartSend(ext_uart_no, write_buffer, write_len);
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}
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return 0;
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}
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/****************************************************************************
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@ -478,7 +540,7 @@ static size_t ImxrtCh438ReadData(uint8_t ext_uart_no)
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* Ch438 default initialization function
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*
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****************************************************************************/
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void Ch438InitDefault(void)
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static void Ch438InitDefault(void)
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{
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int ret, i;
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@ -566,7 +628,7 @@ static ssize_t ch438_read(FAR struct file *filep, FAR char *buffer, size_t bufle
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DEBUGASSERT(port >= 0 && port < CH438PORTNUM);
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length = ImxrtCh438ReadData(port);
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memcpy(buffer, buff[port], buflen);
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memcpy(buffer, buff[port], length);
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if (length > buflen)
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{
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@ -586,7 +648,7 @@ static ssize_t ch438_write(FAR struct file *filep, FAR const char *buffer, size_
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uint8_t port = priv->port;
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DEBUGASSERT(port >= 0 && port < CH438PORTNUM);
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CH438UARTSend(port, buffer, buflen);
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ImxrtCh438WriteData(port, buffer, buflen);
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return buflen;
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}
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@ -599,7 +661,7 @@ static ssize_t ch438_write(FAR struct file *filep, FAR const char *buffer, size_
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* Register /dev/ext_uartN
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*
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****************************************************************************/
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int ch438_register(FAR const char *devpath, uint8_t port)
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static int ch438_register(FAR const char *devpath, uint8_t port)
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{
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FAR struct ch438_dev_s *priv;
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int ret = 0;
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@ -356,9 +356,6 @@
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* Public Function Prototypes
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****************************************************************************/
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#ifdef CONFIG_BSP_USING_CH438
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int getInterruptStatus(int argc, char **argv);
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void Ch438InitDefault(void);
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int ch438_register(FAR const char *devpath,uint8_t port);
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int board_ch438_initialize(void);
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#endif
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