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| author | Hesham ALMatary <heshamelmatary@gmail.com> | 2014-09-19 14:20:35 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-09-29 14:37:25 -0500 |
| commit | fbe59f7c6756edc2952b13167893b85fe6e7aecb (patch) | |
| tree | a9e833d9b1147c596a2adac4bd29cf9d1b1dd6d8 | |
| parent | or1k fix bug: Initialize thread context with higher stack address. (diff) | |
| download | rtems-fbe59f7c6756edc2952b13167893b85fe6e7aecb.tar.bz2 | |
or1ksim: Console: implement uart_read_polled
Implement uart_read_polled which is needed for any application that
reads input from users. It works fine with pppd, capture, and all
termios tests.
| -rw-r--r-- | c/src/lib/libbsp/or1k/or1ksim/console/uart.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/c/src/lib/libbsp/or1k/or1ksim/console/uart.c b/c/src/lib/libbsp/or1k/or1ksim/console/uart.c index f1cfa0985f..7ceca816a5 100644 --- a/c/src/lib/libbsp/or1k/or1ksim/console/uart.c +++ b/c/src/lib/libbsp/or1k/or1ksim/console/uart.c @@ -86,9 +86,18 @@ static int uart_last_close(int major, int minor, void *arg) return 0; } -static int uart_read_polled(int minor) +static char uart_read_polled(int minor) { - return -1; + unsigned char lsr; + char c; + + /* Get a character when avaiable */ + do { + lsr = OR1KSIM_REG(OR1KSIM_BSP_UART_REG_LINE_STATUS); + } while ((lsr & OR1KSIM_BSP_UART_REG_LINE_STATUS_DR) + != OR1KSIM_BSP_UART_REG_LINE_STATUS_DR); + + return OR1KSIM_REG(OR1KSIM_BSP_UART_REG_RX); } static void uart_write_polled(int minor, char c) |