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Merge pull request #855 from devsaurus/dev-uart 

UART: fix parity and stopbit generation
This commit is contained in:
Terry Ellison 2015-12-22 01:38:40 +00:00
parent e45d790441 6cbe716db0
commit 0069f002a8
6 changed files with 64 additions and 45 deletions
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8
app/driver/uart.c
View File

@ -60,10 +60,10 @@ uart_config(uint8 uart_no)
uart_div_modify(uart_no, UART_CLK_FREQ / (UartDev.baut_rate));
WRITE_PERI_REG(UART_CONF0(uart_no), UartDev.exist_parity
| UartDev.parity
| (UartDev.stop_bits << UART_STOP_BIT_NUM_S)
| (UartDev.data_bits << UART_BIT_NUM_S));
WRITE_PERI_REG(UART_CONF0(uart_no), ((UartDev.exist_parity & UART_PARITY_EN_M) << UART_PARITY_EN_S) //SET BIT AND PARITY MODE
| ((UartDev.parity & UART_PARITY_M) <<UART_PARITY_S )
| ((UartDev.stop_bits & UART_STOP_BIT_NUM) << UART_STOP_BIT_NUM_S)
| ((UartDev.data_bits & UART_BIT_NUM) << UART_BIT_NUM_S));
//clear rx and tx fifo,not ready

14
app/include/driver/uart.h
View File

@ -17,20 +17,20 @@ typedef enum {
} UartBitsNum4Char;
typedef enum {
ONE_STOP_BIT = 0,
ONE_HALF_STOP_BIT = BIT2,
TWO_STOP_BIT = BIT2
ONE_STOP_BIT = 0x1,
ONE_HALF_STOP_BIT = 0x2,
TWO_STOP_BIT = 0x3
} UartStopBitsNum;
typedef enum {
NONE_BITS = 0,
ODD_BITS = 0,
EVEN_BITS = BIT4
NONE_BITS = 0x2,
ODD_BITS = 1,
EVEN_BITS = 0
} UartParityMode;
typedef enum {
STICK_PARITY_DIS = 0,
STICK_PARITY_EN = BIT3 | BIT5
STICK_PARITY_EN = 1
} UartExistParity;
typedef enum {

50
app/include/driver/uart_register.h
View File

@ -78,26 +78,36 @@
#define UART_RXFIFO_CNT 0x000000FF
#define UART_RXFIFO_CNT_S 0
#define UART_CONF0( i ) (REG_UART_BASE( i ) + 0x20)
#define UART_TXFIFO_RST (BIT(18))
#define UART_RXFIFO_RST (BIT(17))
#define UART_IRDA_EN (BIT(16))
#define UART_TX_FLOW_EN (BIT(15))
#define UART_LOOPBACK (BIT(14))
#define UART_IRDA_RX_INV (BIT(13))
#define UART_IRDA_TX_INV (BIT(12))
#define UART_IRDA_WCTL (BIT(11))
#define UART_IRDA_TX_EN (BIT(10))
#define UART_IRDA_DPLX (BIT(9))
#define UART_TXD_BRK (BIT(8))
#define UART_SW_DTR (BIT(7))
#define UART_SW_RTS (BIT(6))
#define UART_STOP_BIT_NUM 0x00000003
#define UART_STOP_BIT_NUM_S 4
#define UART_BIT_NUM 0x00000003
#define UART_BIT_NUM_S 2
#define UART_PARITY_EN (BIT(1))
#define UART_PARITY (BIT(0))
#define UART_CONF0( i ) (REG_UART_BASE( i ) + 0x20)
#define UART_DTR_INV (BIT(24))
#define UART_RTS_INV (BIT(23))
#define UART_TXD_INV (BIT(22))
#define UART_DSR_INV (BIT(21))
#define UART_CTS_INV (BIT(20))
#define UART_RXD_INV (BIT(19))
#define UART_TXFIFO_RST (BIT(18))
#define UART_RXFIFO_RST (BIT(17))
#define UART_IRDA_EN (BIT(16))
#define UART_TX_FLOW_EN (BIT(15))
#define UART_LOOPBACK (BIT(14))
#define UART_IRDA_RX_INV (BIT(13))
#define UART_IRDA_TX_INV (BIT(12))
#define UART_IRDA_WCTL (BIT(11))
#define UART_IRDA_TX_EN (BIT(10))
#define UART_IRDA_DPLX (BIT(9))
#define UART_TXD_BRK (BIT(8))
#define UART_SW_DTR (BIT(7))
#define UART_SW_RTS (BIT(6))
#define UART_STOP_BIT_NUM 0x00000003
#define UART_STOP_BIT_NUM_S 4
#define UART_BIT_NUM 0x00000003
#define UART_BIT_NUM_S 2
#define UART_PARITY_EN (BIT(1))
#define UART_PARITY_EN_M 0x00000001
#define UART_PARITY_EN_S 1
#define UART_PARITY (BIT(0))
#define UART_PARITY_M 0x00000001
#define UART_PARITY_S 0
#define UART_CONF1( i ) (REG_UART_BASE( i ) + 0x24)
#define UART_RX_TOUT_EN (BIT(31))

14
app/modules/uart.c
View File

@ -156,10 +156,16 @@ static int uart_write( lua_State* L )
// Module function map
static const LUA_REG_TYPE uart_map[] = {
{ LSTRKEY( "setup" ), LFUNCVAL( uart_setup ) },
{ LSTRKEY( "write" ), LFUNCVAL( uart_write ) },
{ LSTRKEY( "on" ), LFUNCVAL( uart_on ) },
{ LSTRKEY( "alt" ), LFUNCVAL( uart_alt ) },
{ LSTRKEY( "setup" ), LFUNCVAL( uart_setup ) },
{ LSTRKEY( "write" ), LFUNCVAL( uart_write ) },
{ LSTRKEY( "on" ), LFUNCVAL( uart_on ) },
{ LSTRKEY( "alt" ), LFUNCVAL( uart_alt ) },
{ LSTRKEY( "STOPBITS_1" ), LNUMVAL( PLATFORM_UART_STOPBITS_1 ) },
{ LSTRKEY( "STOPBITS_1_5" ), LNUMVAL( PLATFORM_UART_STOPBITS_1_5 ) },
{ LSTRKEY( "STOPBITS_2" ), LNUMVAL( PLATFORM_UART_STOPBITS_2 ) },
{ LSTRKEY( "PARITY_NONE" ), LNUMVAL( PLATFORM_UART_PARITY_NONE ) },
{ LSTRKEY( "PARITY_EVEN" ), LNUMVAL( PLATFORM_UART_PARITY_EVEN ) },
{ LSTRKEY( "PARITY_ODD" ), LNUMVAL( PLATFORM_UART_PARITY_ODD ) },
{ LNILKEY, LNILVAL }
};

7
app/platform/platform.c
View File

@ -222,8 +222,8 @@ uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int pari
switch (stopbits)
{
case PLATFORM_UART_STOPBITS_1:
UartDev.stop_bits = ONE_STOP_BIT;
case PLATFORM_UART_STOPBITS_1_5:
UartDev.stop_bits = ONE_HALF_STOP_BIT;
break;
case PLATFORM_UART_STOPBITS_2:
UartDev.stop_bits = TWO_STOP_BIT;
@ -237,12 +237,15 @@ uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int pari
{
case PLATFORM_UART_PARITY_EVEN:
UartDev.parity = EVEN_BITS;
UartDev.exist_parity = STICK_PARITY_EN;
break;
case PLATFORM_UART_PARITY_ODD:
UartDev.parity = ODD_BITS;
UartDev.exist_parity = STICK_PARITY_EN;
break;
default:
UartDev.parity = NONE_BITS;
UartDev.exist_parity = STICK_PARITY_DIS;
break;
}

16
app/platform/platform.h
View File

@ -119,19 +119,19 @@ int platform_spi_transaction( uint8_t id, uint8_t cmd_bitlen, spi_data_type cmd_
// Parity
enum
{
PLATFORM_UART_PARITY_EVEN,
PLATFORM_UART_PARITY_ODD,
PLATFORM_UART_PARITY_NONE,
PLATFORM_UART_PARITY_MARK,
PLATFORM_UART_PARITY_SPACE
PLATFORM_UART_PARITY_NONE = 0,
PLATFORM_UART_PARITY_EVEN = 1,
PLATFORM_UART_PARITY_ODD = 2,
PLATFORM_UART_PARITY_MARK = 3,
PLATFORM_UART_PARITY_SPACE = 4
};
// Stop bits
enum
{
PLATFORM_UART_STOPBITS_1,
PLATFORM_UART_STOPBITS_1_5,
PLATFORM_UART_STOPBITS_2
PLATFORM_UART_STOPBITS_1 = 1,
PLATFORM_UART_STOPBITS_2 = 2,
PLATFORM_UART_STOPBITS_1_5 = 3
};
// Flow control types (this is a bit mask, one can specify PLATFORM_UART_FLOW_RTS | PLATFORM_UART_FLOW_CTS )