Import Mbed OS hard-float snapshot

targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_ebi.c

@@ -0,0 +1,178 @@
+/**************************************************************************//**
+ * @file     ebi.c
+ * @version  V3.00
+ * $Revision: 9 $
+ * $Date: 15/08/11 10:26a $
+ * @brief    M451 series EBI driver source file
+ *
+ * @note
+ * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
+*****************************************************************************/
+#include "M451Series.h"
+
+
+/** @addtogroup Standard_Driver Standard Driver
+  @{
+*/
+
+/** @addtogroup EBI_Driver EBI Driver
+  @{
+*/
+
+/** @addtogroup EBI_EXPORTED_FUNCTIONS EBI Exported Functions
+  @{
+*/
+
+/**
+  * @brief      Initialize EBI for specify Bank
+  *
+  * @param[in]  u32Bank             Bank number for EBI. Valid values are:
+  *                                     - \ref EBI_BANK0
+  *                                     - \ref EBI_BANK1
+  * @param[in]  u32DataWidth        Data bus width. Valid values are:
+  *                                     - \ref EBI_BUSWIDTH_8BIT
+  *                                     - \ref EBI_BUSWIDTH_16BIT
+  * @param[in]  u32TimingClass      Default timing configuration. Valid values are:
+  *                                     - \ref EBI_TIMING_FASTEST
+  *                                     - \ref EBI_TIMING_VERYFAST
+  *                                     - \ref EBI_TIMING_FAST
+  *                                     - \ref EBI_TIMING_NORMAL
+  *                                     - \ref EBI_TIMING_SLOW
+  *                                     - \ref EBI_TIMING_VERYSLOW
+  *                                     - \ref EBI_TIMING_SLOWEST
+  * @param[in]  u32BusMode          Enable EBI separate mode. This parameter is current not used.
+  * @param[in]  u32CSActiveLevel    CS is active High/Low. Valid values are:
+  *                                     - \ref EBI_CS_ACTIVE_HIGH
+  *                                     - \ref EBI_CS_ACTIVE_LOW
+  *
+  * @return none
+  *
+  * @details    This function is used to open specify EBI bank with different bus width, timing setting and \n
+  *             active level of CS pin to access EBI device.
+  * @note       Write Buffer Enable(WBUFEN) and Extend Time Of ALE(TALE) are only available in EBI bank0 control register.
+  */
+void EBI_Open(uint32_t u32Bank, uint32_t u32DataWidth, uint32_t u32TimingClass, uint32_t u32BusMode, uint32_t u32CSActiveLevel)
+{
+    volatile uint32_t *pu32EBICTL  = (uint32_t *)((uint32_t)&EBI->CTL0 + (u32Bank * 0x10));
+    volatile uint32_t *pu32EBITCTL = (uint32_t *)((uint32_t)&EBI->TCTL0 + (u32Bank * 0x10));
+
+    if(u32DataWidth == EBI_BUSWIDTH_8BIT)
+        *pu32EBICTL &= ~EBI_CTL0_DW16_Msk;
+    else
+        *pu32EBICTL |= EBI_CTL0_DW16_Msk;
+
+    switch(u32TimingClass)
+    {
+        case EBI_TIMING_FASTEST:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_1 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk;
+            *pu32EBITCTL = 0x0;
+            break;
+
+        case EBI_TIMING_VERYFAST:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_1 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk |
+                          (0x3 << EBI_CTL0_TALE_Pos) ;
+            *pu32EBITCTL = 0x03003318;
+            break;
+
+        case EBI_TIMING_FAST:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_2 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk;
+            *pu32EBITCTL = 0x0;
+            break;
+
+        case EBI_TIMING_NORMAL:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_2 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk |
+                          (0x3 << EBI_CTL0_TALE_Pos) ;
+            *pu32EBITCTL = 0x03003318;
+            break;
+
+        case EBI_TIMING_SLOW:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_2 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk |
+                          (0x7 << EBI_CTL0_TALE_Pos) ;
+            *pu32EBITCTL = 0x07007738;
+            break;
+
+        case EBI_TIMING_VERYSLOW:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_4 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk |
+                          (0x7 << EBI_CTL0_TALE_Pos) ;
+            *pu32EBITCTL = 0x07007738;
+            break;
+
+        case EBI_TIMING_SLOWEST:
+            *pu32EBICTL = (*pu32EBICTL & ~(EBI_CTL0_MCLKDIV_Msk | EBI_CTL0_TALE_Msk)) |
+                          (EBI_MCLKDIV_8 << EBI_CTL0_MCLKDIV_Pos) |
+                          (u32CSActiveLevel << EBI_CTL0_CSPOLINV_Pos) | EBI_CTL0_EN_Msk |
+                          (0x7 << EBI_CTL0_TALE_Pos) ;
+            *pu32EBITCTL = 0x07007738;
+            break;
+
+        default:
+            *pu32EBICTL &= ~EBI_CTL0_EN_Msk;
+            break;
+    }
+}
+
+/**
+  * @brief      Disable EBI on specify Bank
+  *
+  * @param[in]  u32Bank     Bank number for EBI. Valid values are:
+  *                             - \ref EBI_BANK0
+  *                             - \ref EBI_BANK1
+  *
+  * @return     none
+  *
+  * @details    This function is used to close specify EBI function.
+  */
+void EBI_Close(uint32_t u32Bank)
+{
+    volatile uint32_t *pu32EBICTL = (uint32_t *)((uint32_t)&EBI->CTL0 + (u32Bank * 0x10));
+
+    *pu32EBICTL &= ~EBI_CTL0_EN_Msk;
+}
+
+/**
+  * @brief      Set EBI Bus Timing for specify Bank
+  *
+  * @param[in]  u32Bank             Bank number for EBI. Valid values are:
+  *                                     - \ref EBI_BANK0
+  *                                     - \ref EBI_BANK1
+  * @param[in]  u32TimingConfig     Configure EBI timing settings, includes TACC, TAHD, W2X and R2R setting.
+  * @param[in]  u32MclkDiv          Divider for MCLK. Valid values are:
+  *                                     - \ref EBI_MCLKDIV_1
+  *                                     - \ref EBI_MCLKDIV_2
+  *                                     - \ref EBI_MCLKDIV_4
+  *                                     - \ref EBI_MCLKDIV_8
+  *                                     - \ref EBI_MCLKDIV_16
+  *                                     - \ref EBI_MCLKDIV_32
+  *
+  * @return none
+  *
+  * @details    This function is used to configure specify EBI bus timing for access EBI device.
+  */
+void EBI_SetBusTiming(uint32_t u32Bank, uint32_t u32TimingConfig, uint32_t u32MclkDiv)
+{
+    volatile uint32_t *pu32EBICTL  = (uint32_t *)((uint32_t)&EBI->CTL0 + (u32Bank * 0x10));
+    volatile uint32_t *pu32EBITCTL = (uint32_t *)((uint32_t)&EBI->TCTL0 + (u32Bank * 0x10));
+
+    *pu32EBICTL = (*pu32EBICTL & ~EBI_CTL0_MCLKDIV_Msk) | (u32MclkDiv << EBI_CTL0_MCLKDIV_Pos);
+    *pu32EBITCTL = u32TimingConfig;
+}
+
+/*@}*/ /* end of group EBI_EXPORTED_FUNCTIONS */
+
+/*@}*/ /* end of group EBI_Driver */
+
+/*@}*/ /* end of group Standard_Driver */
+
+/*** (C) COPYRIGHT 2013~2015 Nuvoton Technology Corp. ***/