Changeset 34 in XOpenSparcT1 for trunk/sw/uart.c

Timestamp:

04/08/11 11:08:37 (14 years ago)

Author:

pntsvt00

Message:

versione pre-pre-alpha

File:

• trunk/sw/uart.c (modified) (3 diffs)

trunk/sw/uart.c

@@ -3 +3 @@
 const long UART_BASE_ADR[1] = {0x800000FFF0C2C000};
 const int UART_BAUDS[1] = {0};
+const int BAUD_RATE =100000;
 const int IN_CLK =50000000;
 
@@ -59 +60 @@
         long allone=0xffffffffffffffff;
         int divisor;
-        float float_divisor;
+        //float float_divisor;
         /* Reset receiver and transmiter */
         REG8( UART_FCR ) = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT | UART_FCR_TRIGGER_14;
@@ -73 +74 @@
         
         /* Set baud rate */
-        float_divisor = (float) IN_CLK/(16 * UART_BAUDS[core]);
-        float_divisor += 0.50f; // Ensure round up
-        divisor = (int) float_divisor;
-        
+        //float_divisor = (float) IN_CLK/(16 * UART_BAUDS[core]);
+        //float_divisor += 0.50f; // Ensure round up
+        //divisor = (int) float_divisor;
+        divisor = BAUD_RATE;
+
         REG8(UART_BASE_ADR[core] + UART_LCR) |= UART_LCR_DLAB;
         REG8(UART_BASE_ADR[core] + UART_DLL) = divisor & 0x000000ff;