diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/shared/comm/uart.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/shared/comm/uart.c | 102 |
1 files changed, 51 insertions, 51 deletions
diff --git a/c/src/lib/libbsp/arm/shared/comm/uart.c b/c/src/lib/libbsp/arm/shared/comm/uart.c index 5b57e923a1..21ba31dcdf 100644 --- a/c/src/lib/libbsp/arm/shared/comm/uart.c +++ b/c/src/lib/libbsp/arm/shared/comm/uart.c @@ -33,10 +33,10 @@ struct uart_data static struct uart_data uart_data[2]; -/* +/* * Macros to read/wirte register of uart, if configuration is * different just rewrite these macros - */ + */ static inline unsigned char uread(int uart, unsigned int reg) @@ -44,11 +44,11 @@ uread(int uart, unsigned int reg) register unsigned char val; val = Regs[reg]; - + return val; } -static inline void +static inline void uwrite(int uart, int reg, unsigned int val) { @@ -81,13 +81,13 @@ uartError(int uart) inline void uartError(int uart) { unsigned char uartStatus; - + uartStatus = uread(uart, LSR); uartStatus = uread(uart, RBR); } #endif -/* +/* * Uart initialization, it is hardcoded to 8 bit, no parity, * one stop bit, FIFO, things to be changed * are baud rate and nad hw flow control, @@ -97,10 +97,10 @@ void BSP_uart_init(int uart, int baud, int hwFlow) { unsigned char tmp; - + /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + switch(baud) { case 50: @@ -121,20 +121,20 @@ BSP_uart_init(int uart, int baud, int hwFlow) assert(0); return; } - + /* Enable UART block */ uwrite(uart, CNT, UART_ENABLE | PAD_ENABLE); /* Set DLAB bit to 1 */ uwrite(uart, LCR, DLAB); - + /* Set baud rate */ - uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff); - uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff); + uwrite(uart, DLL, (BSPBaseBaud/baud) & 0xff); + uwrite(uart, DLM, ((BSPBaseBaud/baud) >> 8) & 0xff); /* 8-bit, no parity , 1 stop */ uwrite(uart, LCR, CHR_8_BITS); - + /* Enable FIFO */ uwrite(uart, FCR, FIFO_EN | XMIT_RESET | RCV_RESET | RECEIVE_FIFO_TRIGGER12); @@ -151,7 +151,7 @@ BSP_uart_init(int uart, int baud, int hwFlow) return; } -/* +/* * Set baud */ void @@ -161,10 +161,10 @@ BSP_uart_set_baud(int uart, int baud) /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - - /* + + /* * This function may be called whenever TERMIOS parameters - * are changed, so we have to make sure that baud change is + * are changed, so we have to make sure that baud change is * indeed required */ @@ -178,14 +178,14 @@ BSP_uart_set_baud(int uart, int baud) BSP_uart_init(uart, baud, uart_data[uart].hwFlow); uwrite(uart, IER, ier); - + return; } /* - * Enable/disable interrupts + * Enable/disable interrupts */ -void +void BSP_uart_intr_ctrl(int uart, int cmd) { @@ -218,7 +218,7 @@ BSP_uart_intr_ctrl(int uart, int cmd) assert(0); break; } - + return; } @@ -227,12 +227,12 @@ BSP_uart_intr_ctrl(int uart, int cmd) * Status function, -1 if error * detected, 0 if no received chars available, * 1 if received char available, 2 if break - * is detected, it will eat break and error - * chars. It ignores overruns - we cannot do + * is detected, it will eat break and error + * chars. It ignores overruns - we cannot do * anything about - it execpt count statistics * and we are not counting it. */ -int +int BSP_uart_polled_status(int uart) { unsigned char val; @@ -250,7 +250,7 @@ BSP_uart_polled_status(int uart) if((val & (DR | OE | FE)) == 1) { - /* No error, character present */ + /* No error, character present */ return BSP_UART_STATUS_CHAR; } @@ -260,12 +260,12 @@ BSP_uart_polled_status(int uart) return BSP_UART_STATUS_NOCHAR; } - /* + /* * Framing or parity error * eat character */ uread(uart, RBR); - + return BSP_UART_STATUS_ERROR; } @@ -273,24 +273,24 @@ BSP_uart_polled_status(int uart) /* * Polled mode write function */ -void +void BSP_uart_polled_write(int uart, int val) { unsigned char val1; - + /* Sanity check */ assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + for(;;) { - if((val1=uread(uart, LSR)) & THRE) + if((val1=uread(uart, LSR)) & THRE) { break; } } uwrite(uart, THR, val & 0xff); - + return; } @@ -301,16 +301,16 @@ BSP_output_char_via_serial(int val) if (val == '\n') BSP_uart_polled_write(BSPConsolePort,'\r'); } -/* +/* * Polled mode read function */ -int +int BSP_uart_polled_read(int uart) { unsigned char val; assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + for(;;) { if(uread(uart, LSR) & DR) @@ -318,13 +318,13 @@ BSP_uart_polled_read(int uart) break; } } - + val = uread(uart, RBR); return (int)(val & 0xff); } -unsigned +unsigned BSP_poll_char_via_serial() { return BSP_uart_polled_read(BSPConsolePort); @@ -346,19 +346,19 @@ static char termios_tx_hold_com2 = 0; static volatile char termios_tx_hold_valid_com2 = 0; /* - * Set channel parameters + * Set channel parameters */ void BSP_uart_termios_set(int uart, void *ttyp) { assert(uart == BSP_UART_COM1 || uart == BSP_UART_COM2); - + if(uart == BSP_UART_COM1) { termios_stopped_com1 = 0; termios_tx_active_com1 = 0; termios_ttyp_com1 = ttyp; - termios_tx_hold_com1 = 0; + termios_tx_hold_com1 = 0; termios_tx_hold_valid_com1 = 0; } else @@ -366,7 +366,7 @@ BSP_uart_termios_set(int uart, void *ttyp) termios_stopped_com2 = 0; termios_tx_active_com2 = 0; termios_ttyp_com2 = ttyp; - termios_tx_hold_com2 = 0; + termios_tx_hold_com2 = 0; termios_tx_hold_valid_com2 = 0; } @@ -384,7 +384,7 @@ BSP_uart_termios_write_com1(int minor, const char *buf, int len) } /* If there TX buffer is busy - something is royally screwed up */ - assert((uread(BSP_UART_COM1, LSR) & THRE) != 0); + assert((uread(BSP_UART_COM1, LSR) & THRE) != 0); if(termios_stopped_com1) { @@ -401,7 +401,7 @@ BSP_uart_termios_write_com1(int minor, const char *buf, int len) if(!termios_tx_active_com1) { termios_tx_active_com1 = 1; - uwrite(BSP_UART_COM1, IER, + uwrite(BSP_UART_COM1, IER, (RECEIVE_ENABLE | TRANSMIT_ENABLE | RECEIVER_LINE_ST_ENABLE @@ -465,7 +465,7 @@ BSP_uart_termios_isr_com1(void) for(;;) { vect = uread(BSP_UART_COM1, IIR) & 0xf; - + switch(vect) { case NO_MORE_INTR : @@ -479,9 +479,9 @@ BSP_uart_termios_isr_com1(void) } return; case TRANSMITTER_HODING_REGISTER_EMPTY : - /* - * TX holding empty: we have to disable these interrupts - * if there is nothing more to send. + /* + * TX holding empty: we have to disable these interrupts + * if there is nothing more to send. */ ret = rtems_termios_dequeue_characters(termios_ttyp_com1, 1); @@ -514,7 +514,7 @@ BSP_uart_termios_isr_com1(void) } } } - + void BSP_uart_termios_isr_com2() { @@ -526,7 +526,7 @@ BSP_uart_termios_isr_com2() for(;;) { vect = uread(BSP_UART_COM2, IIR) & 0xf; - + switch(vect) { case NO_MORE_INTR : @@ -540,8 +540,8 @@ BSP_uart_termios_isr_com2() } return; case TRANSMITTER_HODING_REGISTER_EMPTY : - /* - * TX holding empty: we have to disable these interrupts + /* + * TX holding empty: we have to disable these interrupts * if there is nothing more to send. */ |