Diff: cmsis/BUILD/mbed/TARGET_EFM32LG_STK3600/TOOLCHAIN_ARM_STD/em_chip.h

Revision:

189:f392fc9709a3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmsis/BUILD/mbed/TARGET_EFM32LG_STK3600/TOOLCHAIN_ARM_STD/em_chip.h	Wed Feb 20 22:31:08 2019 +0000
@@ -0,0 +1,289 @@
+/***************************************************************************//**
+ * @file em_chip.h
+ * @brief Chip Initialization API
+ * @version 5.3.3
+ *******************************************************************************
+ * # License
+ * <b>Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com</b>
+ *******************************************************************************
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ *
+ * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
+ * obligation to support this Software. Silicon Labs is providing the
+ * Software "AS IS", with no express or implied warranties of any kind,
+ * including, but not limited to, any implied warranties of merchantability
+ * or fitness for any particular purpose or warranties against infringement
+ * of any proprietary rights of a third party.
+ *
+ * Silicon Labs will not be liable for any consequential, incidental, or
+ * special damages, or any other relief, or for any claim by any third party,
+ * arising from your use of this Software.
+ *
+ ******************************************************************************/
+
+#ifndef EM_CHIP_H
+#define EM_CHIP_H
+
+#include "em_device.h"
+#include "em_system.h"
+#include "em_gpio.h"
+#include "em_bus.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/***************************************************************************//**
+ * @addtogroup emlib
+ * @{
+ ******************************************************************************/
+
+/***************************************************************************//**
+ * @addtogroup CHIP
+ * @brief Chip errata workarounds initialization API
+ * @details
+ *  API to initialize chip for errata workarounds.
+ * @{
+ ******************************************************************************/
+
+/**************************************************************************//**
+ * @brief
+ *   Chip initialization routine for revision errata workarounds. This function
+ *   must be called immediately in main().
+ *
+ * @note
+ *   This function must be called immediately in main().
+ *
+ * This init function will configure the device to a state where it is
+ * as similar as later revisions as possible, to improve software compatibility
+ * with newer parts. See the device specific errata for details.
+ *****************************************************************************/
+__STATIC_INLINE void CHIP_Init(void)
+{
+#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_GECKO_FAMILY)
+  uint32_t                    rev;
+  SYSTEM_ChipRevision_TypeDef chipRev;
+  volatile uint32_t           *reg;
+
+  rev = *(volatile uint32_t *)(0x0FE081FC);
+  /* Engineering Sample calibration setup */
+  if ((rev >> 24) == 0) {
+    reg   = (volatile uint32_t *)0x400CA00C;
+    *reg &= ~(0x70UL);
+    /* DREG */
+    reg   = (volatile uint32_t *)0x400C6020;
+    *reg &= ~(0xE0000000UL);
+    *reg |= ~(7UL << 25);
+  }
+  if ((rev >> 24) <= 3) {
+    /* DREG */
+    reg   = (volatile uint32_t *)0x400C6020;
+    *reg &= ~(0x00001F80UL);
+    /* Update CMU reset values */
+    reg  = (volatile uint32_t *)0x400C8040;
+    *reg = 0;
+    reg  = (volatile uint32_t *)0x400C8044;
+    *reg = 0;
+    reg  = (volatile uint32_t *)0x400C8058;
+    *reg = 0;
+    reg  = (volatile uint32_t *)0x400C8060;
+    *reg = 0;
+    reg  = (volatile uint32_t *)0x400C8078;
+    *reg = 0;
+  }
+
+  SYSTEM_ChipRevisionGet(&chipRev);
+  if (chipRev.major == 0x01) {
+    /* Rev A errata handling for EM2/3. Must enable DMA clock in order for EM2/3 */
+    /* to work. This will be fixed in later chip revisions, so only do for rev A. */
+    if (chipRev.minor == 00) {
+      reg   = (volatile uint32_t *)0x400C8040;
+      *reg |= 0x2;
+    }
+
+    /* Rev A+B errata handling for I2C when using EM2/3. USART0 clock must be enabled */
+    /* after waking up from EM2/EM3 in order for I2C to work. This will be fixed in */
+    /* later chip revisions, so only do for rev A+B. */
+    if (chipRev.minor <= 0x01) {
+      reg   = (volatile uint32_t *)0x400C8044;
+      *reg |= 0x1;
+    }
+  }
+  /* Ensure correct ADC/DAC calibration value */
+  rev = *(volatile uint32_t *)0x0FE081F0;
+  if (rev < 0x4C8ABA00) {
+    uint32_t cal;
+
+    /* Enable ADC/DAC clocks */
+    reg   = (volatile uint32_t *)0x400C8044UL;
+    *reg |= (1 << 14 | 1 << 11);
+
+    /* Retrive calibration values */
+    cal = ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x00007F00UL)
+           >> 8) << 24;
+
+    cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x0000007FUL)
+            >> 0) << 16;
+
+    cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x00007F00UL)
+            >> 8) << 8;
+
+    cal |= ((*(volatile uint32_t *)(0x0FE081B4UL) & 0x0000007FUL)
+            >> 0) << 0;
+
+    /* ADC0->CAL = 1.25 reference */
+    reg  = (volatile uint32_t *)0x40002034UL;
+    *reg = cal;
+
+    /* DAC0->CAL = 1.25 reference */
+    reg  = (volatile uint32_t *)(0x4000402CUL);
+    cal  = *(volatile uint32_t *)0x0FE081C8UL;
+    *reg = cal;
+
+    /* Turn off ADC/DAC clocks */
+    reg   = (volatile uint32_t *)0x400C8044UL;
+    *reg &= ~(1 << 14 | 1 << 11);
+  }
+#endif
+
+#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_GIANT_FAMILY)
+
+  /****************************/
+  /* Fix for errata CMU_E113. */
+
+  uint8_t                     prodRev;
+  SYSTEM_ChipRevision_TypeDef chipRev;
+
+  prodRev = SYSTEM_GetProdRev();
+  SYSTEM_ChipRevisionGet(&chipRev);
+
+  if ((prodRev >= 16) && (chipRev.minor >= 3)) {
+    /* This fixes an issue with the LFXO on high temperatures. */
+    *(volatile uint32_t*)0x400C80C0 =
+      (*(volatile uint32_t*)0x400C80C0 & ~(1 << 6) ) | (1 << 4);
+  }
+#endif
+
+#if defined(_SILICON_LABS_32B_SERIES_0) && defined(_EFM32_HAPPY_FAMILY)
+
+  uint8_t prodRev;
+  prodRev = SYSTEM_GetProdRev();
+
+  if (prodRev <= 129) {
+    /* This fixes a mistaken internal connection between PC0 and PC4 */
+    /* This disables an internal pulldown on PC4 */
+    *(volatile uint32_t*)(0x400C6018) = (1 << 26) | (5 << 0);
+    /* This disables an internal LDO test signal driving PC4 */
+    *(volatile uint32_t*)(0x400C80E4) &= ~(1 << 24);
+  }
+#endif
+
+#if defined(_SILICON_LABS_GECKO_INTERNAL_SDID_80)
+
+  /****************************
+   * Fixes for errata GPIO_E201 (slewrate) and
+   * HFXO high temperature oscillator startup robustness fix */
+
+  uint32_t port;
+  uint32_t clkEn;
+  uint8_t prodRev;
+  const uint32_t setVal   = (0x5 << _GPIO_P_CTRL_SLEWRATEALT_SHIFT)
+                            | (0x5 << _GPIO_P_CTRL_SLEWRATE_SHIFT);
+  const uint32_t resetVal = _GPIO_P_CTRL_RESETVALUE
+                            & ~(_GPIO_P_CTRL_SLEWRATE_MASK
+                                | _GPIO_P_CTRL_SLEWRATEALT_MASK);
+
+  prodRev = SYSTEM_GetProdRev();
+  SYSTEM_ChipRevision_TypeDef chipRev;
+  SYSTEM_ChipRevisionGet(&chipRev);
+
+  /* This errata is fixed in hardware from PRODREV 0x8F. */
+  if (prodRev < 0x8F) {
+    /* Fixes for errata GPIO_E201 (slewrate) */
+
+    /* Save HFBUSCLK enable state and enable GPIO clock. */
+    clkEn = CMU->HFBUSCLKEN0;
+    CMU->HFBUSCLKEN0 = clkEn | CMU_HFBUSCLKEN0_GPIO;
+
+    /* Update slewrate */
+    for (port = 0; port <= GPIO_PORT_MAX; port++) {
+      GPIO->P[port].CTRL = setVal | resetVal;
+    }
+
+    /* Restore HFBUSCLK enable state. */
+    CMU->HFBUSCLKEN0 = clkEn;
+  }
+
+  /* This errata is fixed in hardware from PRODREV 0x90. */
+  if (prodRev < 0x90) {
+    /* HFXO high temperature oscillator startup robustness fix */
+    CMU->HFXOSTARTUPCTRL =
+      (CMU->HFXOSTARTUPCTRL & ~_CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_MASK)
+      | (0x20 << _CMU_HFXOSTARTUPCTRL_IBTRIMXOCORE_SHIFT);
+  }
+
+  if (chipRev.major == 0x01) {
+    /* Fix for errata EMU_E210 - Potential Power-Down When Entering EM2 */
+    *(volatile uint32_t *)(EMU_BASE + 0x164) |= 0x4;
+  }
+
+#if defined(_EFR_DEVICE)
+  /****************************
+   * Fix for errata DCDC_E206
+   * Disable bypass limit enabled temporarily in SystemInit() errata
+   * workaround. */
+  BUS_RegBitWrite(&EMU->DCDCCLIMCTRL, _EMU_DCDCCLIMCTRL_BYPLIMEN_SHIFT, 0);
+#endif
+#endif
+
+#if defined(_SILICON_LABS_GECKO_INTERNAL_SDID_84)
+
+  uint8_t prodRev = SYSTEM_GetProdRev();
+
+  /* EM2 current fixes for early samples */
+  if (prodRev == 0) {
+    *(volatile uint32_t *)(EMU_BASE + 0x190)  = 0x0000ADE8UL;
+    *(volatile uint32_t *)(EMU_BASE + 0x198) |= (0x1 << 2);
+    *(volatile uint32_t *)(EMU_BASE + 0x190)  = 0x0;
+  }
+  if (prodRev < 2) {
+    *(volatile uint32_t *)(EMU_BASE + 0x164) |= (0x1 << 13);
+  }
+
+  /* Set optimal LFRCOCTRL VREFUPDATE and enable duty cycling of vref */
+  CMU->LFRCOCTRL = (CMU->LFRCOCTRL & ~_CMU_LFRCOCTRL_VREFUPDATE_MASK)
+                   | CMU_LFRCOCTRL_VREFUPDATE_64CYCLES
+                   | CMU_LFRCOCTRL_ENVREF;
+#endif
+
+#if defined(_EFR_DEVICE) && (_SILICON_LABS_GECKO_INTERNAL_SDID >= 84)
+  MSC->CTRL |= 0x1 << 8;
+#endif
+
+  /* Set validated PLFRCO trims for production revision < 5. Overwriting registers
+     for all production revisions is safe. */
+#if defined(_SILICON_LABS_32B_SERIES_1) && defined(_CMU_STATUS_PLFRCOENS_MASK)
+  *(volatile uint32_t *)(CMU_BASE + 0x28C)  = 0x258;
+  *(volatile uint32_t *)(CMU_BASE + 0x290)  = 0x55D4A;
+  *(volatile uint32_t *)(CMU_BASE + 0x2FC)  = 0x16E228;
+  *(volatile uint32_t *)(CMU_BASE + 0x294)  = 0x1E0;
+#endif
+}
+
+/** @} (end addtogroup CHIP) */
+/** @} (end addtogroup emlib) */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EM_CHIP_H */