/ * @brief * Enable Serial Wire Output (SWO) pin. * * @details * The SWO pin (sometimes denoted SWV, serial wire viewer) allows for * miscellaneous output to be passed from the Cortex-M3 debug trace module to * an external debug probe. By default, the debug trace module and pin output * may be disabled. * * Since the SWO pin is only useful when using a debugger, a suggested us
| 82 | * Pin location used for SWO pin on the application in use. |
| 83 | ******************************************************************************/ |
| 84 | void DBG_SWOEnable(unsigned int location) |
| 85 | { |
| 86 | int port; |
| 87 | int pin; |
| 88 | |
| 89 | EFM_ASSERT(location < AFCHANLOC_MAX); |
| 90 | |
| 91 | port = AF_DBG_SWO_PORT(location); |
| 92 | pin = AF_DBG_SWO_PIN(location); |
| 93 | |
| 94 | /* Port/pin location not defined for device? */ |
| 95 | if ((pin < 0) || (port < 0)) |
| 96 | { |
| 97 | EFM_ASSERT(0); |
| 98 | return; |
| 99 | } |
| 100 | |
| 101 | /* Ensure auxiliary clock going to the Cortex debug trace module is enabled */ |
| 102 | CMU_OscillatorEnable(cmuOsc_AUXHFRCO, true, false); |
| 103 | |
| 104 | /* Set selected pin location for SWO pin and enable it */ |
| 105 | GPIO_DbgLocationSet(location); |
| 106 | GPIO_DbgSWOEnable(true); |
| 107 | |
| 108 | /* Configure SWO pin for output */ |
| 109 | GPIO_PinModeSet((GPIO_Port_TypeDef)port, pin, gpioModePushPull, 0); |
| 110 | } |
| 111 | |
| 112 | /** @} (end addtogroup DBG) */ |
| 113 | /** @} (end addtogroup EM_Library) */ |
nothing calls this directly
no test coverage detected