Iftikhar Aziz
/
mbed-dev
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mbed-dev
by 
Umar Naeem
Diff: targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_ebi.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_ebi.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,245 @@
+/****************************************************************************//**
+ * @file ebi.c
+ * @version V0.10
+ * $Revision: 7 $
+ * $Date: 14/09/30 1:10p $
+ * @brief NUC472/NUC442 EBI driver source file
+ *
+ * @note
+ * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
+*****************************************************************************/
+#include "NUC472_442.h"
+//#include "ebi.h"
+
+/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
+ @{
+*/
+
+/** @addtogroup NUC472_442_EBI_Driver EBI Driver
+ @{
+*/
+
+
+/** @addtogroup NUC472_442_EBI_EXPORTED_FUNCTIONS EBI Exported Functions
+ @{
+*/
+
+/**
+ * @brief Initialize EBI for Bank 0~3
+ * @param[in] u32Bank Bank number for EBI. Valid values are:
+ * - \ref EBI_BANK0
+ * - \ref EBI_BANK1
+ * - \ref EBI_BANK2
+ * - \ref EBI_BANK3
+ * @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. Valid values are:
+ * - \ref EBI_SEPARATEMODE_ENABLE
+ * - \ref EBI_SEPARATEMODE_DISABLE
+ * @param[in] u32CSActiveLevel CS is active High/Low. Valid values are:
+ * - \ref EBI_CS_ACTIVE_HIGH
+ * - \ref EBI_CS_ACTIVE_LOW
+ * @return none
+ */
+void EBI_Open(uint32_t u32Bank, uint32_t u32DataWidth, uint32_t u32TimingClass, uint32_t u32BusMode, uint32_t u32CSActiveLevel)
+{
+ /* Enable EBI channel */
+ EBI->TCTL[u32Bank] |= EBI_TCTL_CSEN_Msk;
+
+ /* Configure data bus to 8 or 16bit */
+ if(u32DataWidth == EBI_BUSWIDTH_8BIT)
+ EBI->TCTL[u32Bank] &= ~EBI_TCTL_DW16_Msk;
+ else
+ EBI->TCTL[u32Bank] |= EBI_TCTL_DW16_Msk;
+
+ /* Enable separate mode */
+ if(u32BusMode)
+ EBI->TCTL[u32Bank] |= EBI_TCTL_SEPEN_Msk;
+ else
+ EBI->TCTL[u32Bank] &= ~EBI_TCTL_SEPEN_Msk;
+
+ /* Setup active level of chip select */
+ switch(u32Bank) {
+ case EBI_BANK0:
+ if(u32CSActiveLevel)
+ EBI->CTL |= (0x1ul << EBI_CTL_CSPOLINV_Pos);
+ else
+ EBI->CTL &= ~(0x1ul << EBI_CTL_CSPOLINV_Pos);
+ break;
+
+ case EBI_BANK1:
+ if(u32CSActiveLevel)
+ EBI->CTL |= (0x2ul << EBI_CTL_CSPOLINV_Pos);
+ else
+ EBI->CTL &= ~(0x2ul << EBI_CTL_CSPOLINV_Pos);
+ break;
+
+ case EBI_BANK2:
+ if(u32CSActiveLevel)
+ EBI->CTL |= (0x4ul << EBI_CTL_CSPOLINV_Pos);
+ else
+ EBI->CTL &= ~(0x4ul << EBI_CTL_CSPOLINV_Pos);
+ break;
+
+ case EBI_BANK3:
+ if(u32CSActiveLevel)
+ EBI->CTL |= (0x8ul << EBI_CTL_CSPOLINV_Pos);
+ else
+ EBI->CTL &= ~(0x8ul << EBI_CTL_CSPOLINV_Pos);
+ break;
+ }
+
+ /* Clear R2R/R2W/R2X/TAHD/TACC/TALE entries for safety */
+ EBI->TCTL[u32Bank] &= ~0x0F0FF7FF;
+
+ /* Setup EBI timing */
+ switch(u32TimingClass) {
+ case EBI_TIMING_FASTEST:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_1 << 8);
+ break;
+
+ case EBI_TIMING_VERYFAST:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_1 << 8);
+ EBI->TCTL[u32Bank] |= 0x0303331B;
+ break;
+
+ case EBI_TIMING_FAST:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_2 << 8);
+ break;
+
+ case EBI_TIMING_NORMAL:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_2 << 8);
+ EBI->TCTL[u32Bank] |= 0x0303331B;
+ break;
+
+ case EBI_TIMING_SLOW:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_2 << 8);
+ EBI->TCTL[u32Bank] |= 0x0707773F;
+ break;
+
+ case EBI_TIMING_VERYSLOW:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_4 << 8);
+ EBI->TCTL[u32Bank] |= 0x0707773F;
+ break;
+
+ case EBI_TIMING_SLOWEST:
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | ( EBI_MCLKDIV_8 << 8);
+ EBI->TCTL[u32Bank] |= 0x0707773F;
+ break;
+ }
+}
+
+/**
+ * @brief Disable EBI for bank 0~3.
+ * @param[in] u32Bank Bank number for EBI. Valid values are:
+ * - \ref EBI_BANK0
+ * - \ref EBI_BANK1
+ * - \ref EBI_BANK2
+ * - \ref EBI_BANK3
+ * @return none
+ */
+void EBI_Close(uint32_t u32Bank)
+{
+ EBI->TCTL[u32Bank] &= ~EBI_TCTL_CSEN_Msk;
+}
+
+/**
+ * @brief Set EBI bus timings
+ * @param[in] u32Bank Bank number for EBI. Valid values are:
+ * - \ref EBI_BANK0
+ * - \ref EBI_BANK1
+ * - \ref EBI_BANK2
+ * - \ref EBI_BANK3
+ * @param[in] u32TimingConfig The new EBI timing settings.
+ * @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
+ */
+void EBI_SetBusTiming(uint32_t u32Bank, uint32_t u32TimingConfig, uint32_t u32MclkDiv)
+{
+ EBI->CTL = (EBI->CTL & ~EBI_CTL_MCLKDIV_Msk) | (u32MclkDiv << EBI_CTL_MCLKDIV_Pos);
+ EBI->TCTL[u32Bank] |= u32TimingConfig;
+}
+
+/**
+ * @brief Enable encrypt/decrypt function and set key for EBI bank 0~3.
+ * @param[in] u32Bank Bank number for EBI. Valid values are:
+ * - \ref EBI_BANK0
+ * - \ref EBI_BANK1
+ * - \ref EBI_BANK2
+ * - \ref EBI_BANK3
+ * @param[in] *u32Key 128-bits encrypt/decrypt key array.
+ * @return none
+ */
+void EBI_EnableCrypto(uint32_t u32Bank, uint32_t *u32Key)
+{
+ switch(u32Bank) {
+ case EBI_BANK0:
+ EBI->CTL |= (0x1ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK1:
+ EBI->CTL |= (0x2ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK2:
+ EBI->CTL |= (0x4ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK3:
+ EBI->CTL |= (0x8ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ }
+
+ /* Setup 128-bits key */
+ EBI->KEY0 = u32Key[0];
+ EBI->KEY1 = u32Key[1];
+ EBI->KEY2 = u32Key[2];
+ EBI->KEY3 = u32Key[3];
+}
+
+/**
+ * @brief Disable encrypt/decrypt function for EBI bank 0~3.
+ * @param[in] u32Bank Bank number for EBI. Valid values are:
+ * - \ref EBI_BANK0
+ * - \ref EBI_BANK1
+ * - \ref EBI_BANK2
+ * - \ref EBI_BANK3
+ * @return none
+ */
+void EBI_DisbleCrypto(uint32_t u32Bank)
+{
+ switch(u32Bank) {
+ case EBI_BANK0:
+ EBI->CTL &= ~(0x1ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK1:
+ EBI->CTL &= ~(0x2ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK2:
+ EBI->CTL &= ~(0x4ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ case EBI_BANK3:
+ EBI->CTL &= ~(0x8ul << EBI_CTL_CRYPTOEN_Pos);
+ break;
+ }
+}
+
+/*@}*/ /* end of group NUC472_442_EBI_EXPORTED_FUNCTIONS */
+
+/*@}*/ /* end of group NUC472_442_EBI_Driver */
+
+/*@}*/ /* end of group NUC472_442_Device_Driver */
+
+/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/