/**************************************************************************//**
* @brief Transmit single byte to USART/LEUART
* @param data Character to transmit
*****************************************************************************/
int UART1WriteChar(char c)
{
if (initialized == false)
{
UART1_SerialInit();
}
/* Add CR or LF to CRLF if enabled */
if (LFtoCRLF && (c == '\n'))
{
USART_Tx(UART1, '\r');
}
USART_Tx(UART1, c);
if (LFtoCRLF && (c == '\r'))
{
USART_Tx(UART1, '\n');
}
return c;
}
/*
*********************************************************************************************************
* AppTaskStart()
*
* Description : The startup task. The uC/OS-II ticker should only be initialize once multitasking starts.
*
* Argument(s) : p_arg Argument passed to 'AppTaskStart()' by 'OSTaskCreate()'.
*
* Return(s) : none.
*
* Note(s) : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
* used. The compiler should not generate any code for this statement.
*
* (2) Interrupts are enabled once the task starts because the I-bit of the CCR register was
* set to 0 by 'OSTaskCreate()'.
*********************************************************************************************************
*/
static void App_TaskStart(void *p_arg)
{
(void)p_arg; /* Note(1) */
uint16_t osVersion1, osVersion2, osVersion3;
/* Use 48MHZ HFXO as core clock frequency */
CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
/* Initialize DK board register access */
/* This demo currently only works in EBI mode */
BSP_Init(BSP_INIT_DEFAULT);
/* If first word of user data page is non-zero, enable eA Profiler trace */
BSP_TraceProfilerSetup();
/* Setup SysTick Timer for 10 msec interrupts */
if (SysTick_Config(CMU_ClockFreqGet(cmuClock_CORE) / 1000))
{
while (1) ;
}
/* Initialize the uC/OS-II ticker */
OS_CPU_SysTickInit(CMU_ClockFreqGet(cmuClock_HFPER)/OS_TICKS_PER_SEC);
#if (OS_TASK_STAT_EN > 0)
/* Determine CPU capacity */
OSStatInit();
#endif
/* Create application tasks */
App_TaskCreate();
/* Create application mailboxes */
App_MailboxCreate();
/* Enable EFM32LG_DK3650 RS232/UART switch */
BSP_PeripheralAccess(BSP_RS232_UART, true);
UART1_SerialInit();
UART1_SerialCrLf(1);
/* Initialize the TFT stdio retarget module. */
RETARGET_TftInit();
RETARGET_TftCrLf(0);
osVersion3 = OSVersion();
osVersion1 = osVersion3 / 10000;
osVersion3 -= osVersion1 * 10000;
osVersion2 = osVersion3 / 100;
osVersion3 -= osVersion2 * 100;
osVersion3 %= 100;
printf("\n*************************************");
printf("\n uC/OS-II v%d.%02d.%02d on EFM32 DK ",
osVersion1, osVersion2, osVersion3 );
printf("\n Demo Application \n");
printf("\n uC/OS-II ");
printf("\n \"The real time kernel\" ");
printf("\n www.micrium.com ");
printf("\n is running on ");
printf("\n Silicon Labs EFM32 ");
printf("\n www.silabs.com \n");
printf("\nDescription:");
printf("\n\nTask1: LED blink task");
printf("\n\nTask2: Receives characters from serial and posts message to Task3");
printf("\n\nTask3: Receives message from Task2 and writes it on screen");
printf("\n\n**************************************\n");
printf("\nStart typing...\n");
/* Suspend this task as it is only used once in one Reset cycle */
OSTaskSuspend(APP_CFG_TASK_START_PRIO);
while (1)
{/* endless loop of Start task */
;
}
}
/*
*********************************************************************************************************
* AppTaskStart()
*
* Description : The startup task. The uC/OS-III ticker should only be initialize once multitasking starts.
*
* Argument(s) : p_arg Argument passed to 'AppTaskStart()' by 'OSTaskCreate()'.
*
* Return(s) : none.
*
* Note(s) : (1) The first line of code is used to prevent a compiler warning because 'p_arg' is not
* used. The compiler should not generate any code for this statement.
*
* (2) Interrupts are enabled once the task starts because the I-bit of the CCR register was
* set to 0 by 'OSTaskCreate()'.
*********************************************************************************************************
*/
static void App_TaskStart(void *p_arg)
{
uint16_t osVersion1, osVersion2, osVersion3;
OS_ERR err = OS_ERR_NONE;
(void)p_arg; /* Note(1) */
/* Use 48MHZ HFXO as core clock frequency */
CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
/* Initialize DK board register access */
/* This demo currently only works in EBI mode */
BSP_Init(BSP_INIT_DEFAULT);
/* If first word of user data page is non-zero, enable eA Profiler trace */
BSP_TraceProfilerSetup();
/* Initialize the uC/OS-III ticker */
OS_CPU_SysTickInit(CMU_ClockFreqGet(cmuClock_CORE) / OS_CFG_TICK_RATE_HZ);
#if (OS_TASK_STAT_EN > 0U)
/* Determine CPU capacity */
OSStatInit();
#endif
/* Create application tasks */
App_TaskCreate();
/* Create application mailboxes */
App_MailboxCreate();
UART1_SerialInit();
UART1_SerialCrLf(1);
/* Initialize tft serial */
RETARGET_SerialInit();
osVersion3 = OSVersion( &err );
osVersion1 = osVersion3 / 10000;
osVersion3 -= osVersion1 * 10000;
osVersion2 = osVersion3 / 100;
osVersion3 -= osVersion2 * 100;
osVersion3 %= 100;
printf("\n*************************************");
printf("\n uC/OS-III v%d.%02d.%02d on EFM32 DK ",
osVersion1, osVersion2, osVersion3 );
printf("\n Demo Application \n");
printf("\n uC/OS-III ");
printf("\n \"The real time kernel\" ");
printf("\n www.micrium.com ");
printf("\n is running on ");
printf("\n Energy Micro EFM32 ");
printf("\n www.energymicro.com \n");
printf("\nDescription:");
printf("\n\nTask1: LED blink task");
printf("\n\nTask2: Receives characters from serial and posts message to Task3");
printf("\n\nTask3: Receives message from Task2 and writes it on screen");
printf("\n\n**************************************\n");
printf("\nStart typing...\n");
/* Suspend this task as it is only used once in one Reset cycle */
OSTaskSuspend(&AppTaskStartTCB, &err);
/* Error had occured if code execution reached this point as suspend calls the scheduler
* that performs a context switch */
while (1U) ;
}
