Update UART baud rate and Clock frequency

- Set LPC17XX clock to 11.052 MHz and update baud rate to 115200

Author: Joao Victor Santos

port/ucontroller/nxp/lpc17xx/FreeRTOSConfig.h

@@ -52,7 +52,7 @@ licensing and training services.
 #define configUSE_IDLE_HOOK                     0
 #define configMAX_PRIORITIES                    ( 6 )
 #define configUSE_TICK_HOOK                     0
-#define configCPU_CLOCK_HZ                      ( ( unsigned long ) 8000000)
+#define configCPU_CLOCK_HZ                      ( ( unsigned long ) 11520000)
 #define configTICK_RATE_HZ                      ( ( portTickType ) 1000 )
 #define configMINIMAL_STACK_SIZE                ( ( unsigned short ) 80 )
 #define configTOTAL_HEAP_SIZE                   ( ( size_t ) ( 0x4000 ) )

port/ucontroller/nxp/lpc17xx/lpc17_uart.c

@@ -40,8 +40,8 @@ void uart_init ( uint8_t id )
 
     Chip_UART_Init( usart_cfg[id].ptr );
 
-    /* Standard 19200 baud rate */
-    uart_set_baud( UART_DEBUG, 19200 );
+    /* Standard 115200 baud rate */
+    uart_set_baud( UART_DEBUG, 115200 );
 
     /* Defaults to 8N1, no parity */
     uart_config_data( UART_DEBUG, ( UART_LCR_WLEN8 | UART_LCR_SBS_1BIT | UART_LCR_PARITY_DIS ) );

port/ucontroller/nxp/lpc17xx/lpcopen/src/sysinit_17xx_40xx.c

@@ -73,7 +73,12 @@ void Chip_SetupIrcClocking(void)
 	Chip_Clock_EnablePLL(SYSCTL_MAIN_PLL, SYSCTL_PLL_CONNECT);
 }
 
-#define CLOCK_8MHZ
+#define CLOCK_11_520MHZ
+#ifdef CLOCK_11_520MHZ
+#define PLL_M (18-1)
+#define PLL_N (1-1)
+#define CLK_DIV (25-1)
+#endif
 #ifdef CLOCK_100MHZ
 #define PLL_M (25-1)
 #define PLL_N (2-1)