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change ch438 on nuttx

This commit is contained in:
wgzAIIT 2022-05-11 10:33:02 +08:00
parent cfebd3357b
commit 88ef0ad96c
1 changed files with 19 additions and 27 deletions
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46
Ubiquitous/Nuttx_Fusion_XiUOS/aiit_board/xidatong/src/imxrt_ch438.c
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@ -52,8 +52,8 @@ static int ch438_register(FAR const char *devpath, uint8_t ext_uart_no);
****************************************************************************/ ****************************************************************************/
struct ch438_dev_s struct ch438_dev_s
{ {
sem_t devsem; sem_t devsem; /* ch438 port devsem */
uint8_t port; /* ch438 port number*/ uint8_t port; /* ch438 port number*/
}; };
/**************************************************************************** /****************************************************************************
@ -83,7 +83,7 @@ static pthread_cond_t cond[CH438PORTNUM] =
PTHREAD_COND_INITIALIZER PTHREAD_COND_INITIALIZER
}; };
volatile bool done[CH438PORTNUM] = {false,false,false,false,false,false,false,false}; static volatile bool done[CH438PORTNUM] = {false,false,false,false,false,false,false,false};
static char buff[CH438PORTNUM][CH438_BUFFSIZE]; static char buff[CH438PORTNUM][CH438_BUFFSIZE];
static uint8_t buff_ptr[CH438PORTNUM]; static uint8_t buff_ptr[CH438PORTNUM];
@ -92,6 +92,7 @@ static uint8_t offsetadd[CH438PORTNUM] = {0x00,0x10,0x20,0x30,0x08,0x18,0x28,0x3
static uint8_t gInterruptStatus; static uint8_t gInterruptStatus;
static volatile bool g_ch438open[CH438PORTNUM] = {false,false,false,false,false,false,false,false};
static const struct file_operations g_ch438fops = static const struct file_operations g_ch438fops =
{ {
ch438_open, ch438_open,
@ -608,6 +609,14 @@ static int ch438_open(FAR struct file *filep)
{ {
return ret; return ret;
} }
if(g_ch438open[port])
{
ch438err("ERROR: ch438 port %d is opened!\n",port);
return -EBUSY;
}
g_ch438open[port] = true;
nxsem_post(&priv->devsem); nxsem_post(&priv->devsem);
return ret; return ret;
@ -631,6 +640,13 @@ static int ch438_close(FAR struct file *filep)
return ret; return ret;
} }
if(!g_ch438open[port])
{
ch438err("ERROR: ch438 port %d is closed!\n",port);
return -EBUSY;
}
g_ch438open[port] = false;
nxsem_post(&priv->devsem); nxsem_post(&priv->devsem);
return ret; return ret;
} }
@ -644,16 +660,9 @@ static ssize_t ch438_read(FAR struct file *filep, FAR char *buffer, size_t bufle
FAR struct inode *inode = filep->f_inode; FAR struct inode *inode = filep->f_inode;
FAR struct ch438_dev_s *priv = inode->i_private; FAR struct ch438_dev_s *priv = inode->i_private;
uint8_t port = priv->port; uint8_t port = priv->port;
int ret = OK;
DEBUGASSERT(port >= 0 && port < CH438PORTNUM); DEBUGASSERT(port >= 0 && port < CH438PORTNUM);
ret = nxsem_wait_uninterruptible(&priv->devsem);
if (ret < 0)
{
return (ssize_t)ret;
}
length = ImxrtCh438ReadData(port); length = ImxrtCh438ReadData(port);
memcpy(buffer, buff[port], length); memcpy(buffer, buff[port], length);
@ -661,7 +670,6 @@ static ssize_t ch438_read(FAR struct file *filep, FAR char *buffer, size_t bufle
{ {
length = buflen; length = buflen;
} }
nxsem_post(&priv->devsem);
return length; return length;
} }
@ -674,17 +682,10 @@ static ssize_t ch438_write(FAR struct file *filep, FAR const char *buffer, size_
FAR struct inode *inode = filep->f_inode; FAR struct inode *inode = filep->f_inode;
FAR struct ch438_dev_s *priv = inode->i_private; FAR struct ch438_dev_s *priv = inode->i_private;
uint8_t port = priv->port; uint8_t port = priv->port;
int ret = OK;
DEBUGASSERT(port >= 0 && port < CH438PORTNUM); DEBUGASSERT(port >= 0 && port < CH438PORTNUM);
ret = nxsem_wait_uninterruptible(&priv->devsem);
if (ret < 0)
{
return (ssize_t)ret;
}
ImxrtCh438WriteData(port, buffer, buflen); ImxrtCh438WriteData(port, buffer, buflen);
nxsem_post(&priv->devsem);
return buflen; return buflen;
} }
@ -701,13 +702,6 @@ static int ch438_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
DEBUGASSERT(port >= 0 && port < CH438PORTNUM); DEBUGASSERT(port >= 0 && port < CH438PORTNUM);
/* Get exclusive access */
ret = nxsem_wait_uninterruptible(&priv->devsem);
if (ret < 0)
{
return ret;
}
switch(cmd) switch(cmd)
{ {
case OPE_INT: case OPE_INT:
@ -720,8 +714,6 @@ static int ch438_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
ret = -ENOTTY; ret = -ENOTTY;
break; break;
} }
nxsem_post(&priv->devsem);
return ret; return ret;
} }