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added more UART low-level functions

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git-svn-id: http://moon:8086/svn/vhdl/trunk@512 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2009-10-14 22:04:44 +00:00
parent abb030f663
commit 73dcae8d35
2 changed files with 103 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CPUs/MIPS/bsp/examples/libsys.c
+70 -9
View File
@@ -150,27 +150,88 @@ void DCACHE_invalidate_at(UINT32* pPtr)
}
// ---------------------------------------------------------------------------------
char readchar(void)
int UART0_readchar(void)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart_data;
volatile UINT32 *pUART_stat = (UINT32*)sys_uart0_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart0_data;
while(!(0x10 & *pUART_stat));
if (0x10 & *pUART_stat)
return (*pUART_data & 0xFF);
return (char)*pUART_data;
return -1;
}
void writechar(char c)
void UART0_writechar(char c)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart_data;
volatile UINT32 *pUART_stat = (UINT32*)sys_uart0_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart0_data;
while((0x01 & *pUART_stat) != 0);
*pUART_data = (UINT32)c;
}
void _putchar(char c)
int UART1_readchar(void)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart1_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart1_data;
if (0x10 & *pUART_stat)
return (*pUART_data & 0xFF);
return -1;
}
void UART1_writechar(char c)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart1_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart1_data;
while((0x01 & *pUART_stat) != 0);
*pUART_data = (UINT32)c;
}
int UART2_readchar(void)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart2_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart2_data;
if (0x10 & *pUART_stat)
return (*pUART_data & 0xFF);
return -1;
}
void UART2_writechar(char c)
{
volatile UINT32 *pUART_stat = (UINT32*)sys_uart2_stat;
volatile UINT32 *pUART_data = (UINT32*)sys_uart2_data;
while((0x01 & *pUART_stat) != 0);
*pUART_data = (UINT32)c;
}
char readchar(void)
{
int c;
do
{
c = UART0_readchar();
} while(c < 0);
return (char)c;
}
void writechar(char c)
{
UART0_writechar(c);
}
void _ser_putchar(char c)
{
if (c == 0x0A)
{