move to targets dir

targets/efm32/src/printing.c

@@ -0,0 +1,84 @@
+#include "em_chip.h"
+#include "em_cmu.h"
+#include "em_emu.h"
+#include "em_core.h"
+#include "em_usart.h"
+#include "em_gpio.h"
+#include <stdio.h>
+#include <string.h>
+
+#include "app.h"
+#ifndef PRINTING_USE_VCOM
+int RETARGET_WriteChar(char c)
+{
+  return ITM_SendChar(c);
+}
+
+int RETARGET_ReadChar(void)
+{
+  return 0;
+}
+
+void setupSWOForPrint(void)
+{
+  /* Enable GPIO clock. */
+	CMU_ClockEnable(cmuClock_GPIO, true);
+
+  /* Enable Serial wire output pin */
+  GPIO->ROUTEPEN |= GPIO_ROUTEPEN_SWVPEN;
+
+  /* Set location 0 */
+  GPIO->ROUTELOC0 = GPIO_ROUTELOC0_SWVLOC_LOC0;
+
+  /* Enable output on pin - GPIO Port F, Pin 2 */
+  GPIO->P[5].MODEL &= ~(_GPIO_P_MODEL_MODE2_MASK);
+  GPIO->P[5].MODEL |= GPIO_P_MODEL_MODE2_PUSHPULL;
+
+  /* Enable debug clock AUXHFRCO */
+  CMU_OscillatorEnable(cmuOsc_AUXHFRCO, true, true);
+  CMU->OSCENCMD = CMU_OSCENCMD_AUXHFRCOEN;
+
+  /* Wait until clock is ready */
+  while (!(CMU->STATUS & CMU_STATUS_AUXHFRCORDY));
+
+  /* Enable trace in core debug */
+  CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
+  ITM->LAR  = 0xC5ACCE55;
+  ITM->TER  = 0x0;
+  ITM->TCR  = 0x0;
+  TPI->SPPR = 2;
+  TPI->ACPR = 0x15;	// changed from 0x0F on Giant, etc. to account for 19 MHz default AUXHFRCO frequency
+  ITM->TPR  = 0x0;
+  DWT->CTRL = 0x400003FE;
+  ITM->TCR  = 0x0001000D;
+  TPI->FFCR = 0x00000100;
+  ITM->TER  = 0x1;
+}
+
+
+void printing_init()
+{
+	setupSWOForPrint();
+}
+#else
+
+int RETARGET_WriteChar(char c)
+{
+  USART_Tx(USART0,c);
+  return 0;
+}
+
+int RETARGET_ReadChar(void)
+{
+  return 0;
+}
+
+
+void printing_init()
+{
+#ifdef USING_DEV_BOARD
+//	GPIO_PinModeSet(gpioPortA,5,gpioModePushPull,1); // VCOM enable
+#endif
+}
+
+#endif