Jonathan Piat / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_Maxim/TARGET_MAX32600/system_max32600.c@514:7668256dbe61, 2015-04-16 (annotated)

Committer:
mbed_official
Date:
Thu Apr 16 11:45:13 2015 +0100
Revision:
514:7668256dbe61
Child:
515:7467ef1f4ad8
Synchronized with git revision 29ab478a78892415a3c721cdc20b1755b7b01ba1



Full URL: https://github.com/mbedmicro/mbed/commit/29ab478a78892415a3c721cdc20b1755b7b01ba1/



LPC824, SSCI824 - Add GCC_ARM exporter support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 514:7668256dbe61 1 /*******************************************************************************
mbed_official 514:7668256dbe61 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
mbed_official 514:7668256dbe61 3 *
mbed_official 514:7668256dbe61 4 * Permission is hereby granted, free of charge, to any person obtaining a
mbed_official 514:7668256dbe61 5 * copy of this software and associated documentation files (the "Software"),
mbed_official 514:7668256dbe61 6 * to deal in the Software without restriction, including without limitation
mbed_official 514:7668256dbe61 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
mbed_official 514:7668256dbe61 8 * and/or sell copies of the Software, and to permit persons to whom the
mbed_official 514:7668256dbe61 9 * Software is furnished to do so, subject to the following conditions:
mbed_official 514:7668256dbe61 10 *
mbed_official 514:7668256dbe61 11 * The above copyright notice and this permission notice shall be included
mbed_official 514:7668256dbe61 12 * in all copies or substantial portions of the Software.
mbed_official 514:7668256dbe61 13 *
mbed_official 514:7668256dbe61 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
mbed_official 514:7668256dbe61 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed_official 514:7668256dbe61 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed_official 514:7668256dbe61 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
mbed_official 514:7668256dbe61 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
mbed_official 514:7668256dbe61 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
mbed_official 514:7668256dbe61 20 * OTHER DEALINGS IN THE SOFTWARE.
mbed_official 514:7668256dbe61 21 *
mbed_official 514:7668256dbe61 22 * Except as contained in this notice, the name of Maxim Integrated
mbed_official 514:7668256dbe61 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
mbed_official 514:7668256dbe61 24 * Products, Inc. Branding Policy.
mbed_official 514:7668256dbe61 25 *
mbed_official 514:7668256dbe61 26 * The mere transfer of this software does not imply any licenses
mbed_official 514:7668256dbe61 27 * of trade secrets, proprietary technology, copyrights, patents,
mbed_official 514:7668256dbe61 28 * trademarks, maskwork rights, or any other form of intellectual
mbed_official 514:7668256dbe61 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
mbed_official 514:7668256dbe61 30 * ownership rights.
mbed_official 514:7668256dbe61 31 *******************************************************************************
mbed_official 514:7668256dbe61 32 */
mbed_official 514:7668256dbe61 33
mbed_official 514:7668256dbe61 34 #include "max32600.h"
mbed_official 514:7668256dbe61 35 #include "clkman_regs.h"
mbed_official 514:7668256dbe61 36 #include "pwrman_regs.h"
mbed_official 514:7668256dbe61 37 #include "ioman_regs.h"
mbed_official 514:7668256dbe61 38 #include "trim_regs.h"
mbed_official 514:7668256dbe61 39 #include "flc_regs.h"
mbed_official 514:7668256dbe61 40 #include "pwrseq_regs.h"
mbed_official 514:7668256dbe61 41 #include "dac_regs.h"
mbed_official 514:7668256dbe61 42 #include "icc_regs.h"
mbed_official 514:7668256dbe61 43
mbed_official 514:7668256dbe61 44 /* Application developer should override where necessary with different external HFX source */
mbed_official 514:7668256dbe61 45 #ifndef __SYSTEM_HFX
mbed_official 514:7668256dbe61 46 #define __SYSTEM_HFX 8000000
mbed_official 514:7668256dbe61 47 #endif
mbed_official 514:7668256dbe61 48
mbed_official 514:7668256dbe61 49 uint32_t SystemCoreClock = 24000000;
mbed_official 514:7668256dbe61 50
mbed_official 514:7668256dbe61 51 void SystemCoreClockUpdate(void)
mbed_official 514:7668256dbe61 52 {
mbed_official 514:7668256dbe61 53 switch ((MXC_CLKMAN->clk_ctrl & MXC_F_CLKMAN_CLK_CTRL_SYSTEM_SOURCE_SELECT) >> MXC_F_CLKMAN_CLK_CTRL_SYSTEM_SOURCE_SELECT_POS) {
mbed_official 514:7668256dbe61 54 case MXC_E_CLKMAN_SYSTEM_SOURCE_SELECT_24MHZ_RO_DIV_8:
mbed_official 514:7668256dbe61 55 SystemCoreClock = 3000000;
mbed_official 514:7668256dbe61 56 break;
mbed_official 514:7668256dbe61 57 case MXC_E_CLKMAN_SYSTEM_SOURCE_SELECT_24MHZ_RO:
mbed_official 514:7668256dbe61 58 case MXC_E_CLKMAN_SYSTEM_SOURCE_SELECT_PLL_48MHZ_DIV_2:
mbed_official 514:7668256dbe61 59 SystemCoreClock = 24000000;
mbed_official 514:7668256dbe61 60 break;
mbed_official 514:7668256dbe61 61 case MXC_E_CLKMAN_SYSTEM_SOURCE_SELECT_HFX:
mbed_official 514:7668256dbe61 62 SystemCoreClock = __SYSTEM_HFX;
mbed_official 514:7668256dbe61 63 break;
mbed_official 514:7668256dbe61 64 }
mbed_official 514:7668256dbe61 65
mbed_official 514:7668256dbe61 66 uint32_t shift = MXC_CLKMAN->clk_ctrl_0_system;
mbed_official 514:7668256dbe61 67 if (shift) {
mbed_official 514:7668256dbe61 68 SystemCoreClock = SystemCoreClock >> (shift - 1);
mbed_official 514:7668256dbe61 69 }
mbed_official 514:7668256dbe61 70 }
mbed_official 514:7668256dbe61 71
mbed_official 514:7668256dbe61 72 /* power seq registers */
mbed_official 514:7668256dbe61 73 static void set_pwr_regs(void)
mbed_official 514:7668256dbe61 74 {
mbed_official 514:7668256dbe61 75 uint32_t dac2trim = MXC_DAC2->reg & 0xff00ffff;
mbed_official 514:7668256dbe61 76 uint32_t dac3trim = MXC_DAC3->reg & 0xff00ffff;
mbed_official 514:7668256dbe61 77 dac2trim = dac2trim + MXC_TRIM->trim_reg_36;
mbed_official 514:7668256dbe61 78 dac3trim = dac3trim + MXC_TRIM->trim_reg_37;
mbed_official 514:7668256dbe61 79 MXC_PWRSEQ->reg5 = MXC_TRIM->trim_reg_13;
mbed_official 514:7668256dbe61 80 MXC_PWRSEQ->reg6 = MXC_TRIM->trim_reg_14;
mbed_official 514:7668256dbe61 81 MXC_DAC0->trm = MXC_TRIM->trim_reg_34;
mbed_official 514:7668256dbe61 82 MXC_DAC1->trm = MXC_TRIM->trim_reg_35;
mbed_official 514:7668256dbe61 83 MXC_DAC2->reg = dac2trim;
mbed_official 514:7668256dbe61 84 MXC_DAC3->reg = dac3trim;
mbed_official 514:7668256dbe61 85 }
mbed_official 514:7668256dbe61 86
mbed_official 514:7668256dbe61 87 void ICC_Enable(void)
mbed_official 514:7668256dbe61 88 {
mbed_official 514:7668256dbe61 89 /* clock gater must be 'on' not 'dynamic' for cache control */
mbed_official 514:7668256dbe61 90 uint32_t temp = MXC_CLKMAN->clk_gate_ctrl0;
mbed_official 514:7668256dbe61 91 temp &= ~MXC_F_CLKMAN_CLK_GATE_CTRL0_ICACHE_CLK_GATER;
mbed_official 514:7668256dbe61 92 temp |= (MXC_E_CLKMAN_CLK_GATE_ON << MXC_F_CLKMAN_CLK_GATE_CTRL0_ICACHE_CLK_GATER_POS);
mbed_official 514:7668256dbe61 93 MXC_CLKMAN->clk_gate_ctrl0 = temp;
mbed_official 514:7668256dbe61 94
mbed_official 514:7668256dbe61 95
mbed_official 514:7668256dbe61 96 /* invalidate, wait, enable */
mbed_official 514:7668256dbe61 97 MXC_ICC->invdt_all = 0xFFFF;
mbed_official 514:7668256dbe61 98 while(!(MXC_ICC->ctrl_stat & MXC_F_ICC_CTRL_STAT_READY));
mbed_official 514:7668256dbe61 99 MXC_ICC->ctrl_stat |= MXC_F_ICC_CTRL_STAT_ENABLE;
mbed_official 514:7668256dbe61 100
mbed_official 514:7668256dbe61 101 /* must invalidate a second time for proper use */
mbed_official 514:7668256dbe61 102 MXC_ICC->invdt_all = 1;
mbed_official 514:7668256dbe61 103
mbed_official 514:7668256dbe61 104 /* clock gater 'dynamic' safe again */
mbed_official 514:7668256dbe61 105 temp = MXC_CLKMAN->clk_gate_ctrl0;
mbed_official 514:7668256dbe61 106 temp &= ~MXC_F_CLKMAN_CLK_GATE_CTRL0_ICACHE_CLK_GATER;
mbed_official 514:7668256dbe61 107 temp |= (MXC_E_CLKMAN_CLK_GATE_DYNAMIC << MXC_F_CLKMAN_CLK_GATE_CTRL0_ICACHE_CLK_GATER_POS);
mbed_official 514:7668256dbe61 108 MXC_CLKMAN->clk_gate_ctrl0 = temp;
mbed_official 514:7668256dbe61 109 }
mbed_official 514:7668256dbe61 110
mbed_official 514:7668256dbe61 111 // This function to be implemented by the hal
mbed_official 514:7668256dbe61 112 extern void low_level_init();
mbed_official 514:7668256dbe61 113
mbed_official 514:7668256dbe61 114 void SystemInit(void)
mbed_official 514:7668256dbe61 115 {
mbed_official 514:7668256dbe61 116 set_pwr_regs();
mbed_official 514:7668256dbe61 117
mbed_official 514:7668256dbe61 118 // enable instruction cache
mbed_official 514:7668256dbe61 119 ICC_Enable();
mbed_official 514:7668256dbe61 120
mbed_official 514:7668256dbe61 121 low_level_init();
mbed_official 514:7668256dbe61 122
mbed_official 514:7668256dbe61 123 // Clear IO Active
mbed_official 514:7668256dbe61 124 MXC_PWRMAN->pwr_rst_ctrl = (MXC_F_PWRMAN_PWR_RST_CTRL_FLASH_ACTIVE |
mbed_official 514:7668256dbe61 125 MXC_F_PWRMAN_PWR_RST_CTRL_SRAM_ACTIVE);
mbed_official 514:7668256dbe61 126
mbed_official 514:7668256dbe61 127 // Set WUD Clear
mbed_official 514:7668256dbe61 128 MXC_PWRMAN->pwr_rst_ctrl = (MXC_F_PWRMAN_PWR_RST_CTRL_FLASH_ACTIVE |
mbed_official 514:7668256dbe61 129 MXC_F_PWRMAN_PWR_RST_CTRL_SRAM_ACTIVE |
mbed_official 514:7668256dbe61 130 MXC_F_PWRMAN_PWR_RST_CTRL_WUD_CLEAR);
mbed_official 514:7668256dbe61 131
mbed_official 514:7668256dbe61 132 // Set IO Active
mbed_official 514:7668256dbe61 133 MXC_PWRMAN->pwr_rst_ctrl = (MXC_F_PWRMAN_PWR_RST_CTRL_FLASH_ACTIVE |
mbed_official 514:7668256dbe61 134 MXC_F_PWRMAN_PWR_RST_CTRL_SRAM_ACTIVE |
mbed_official 514:7668256dbe61 135 MXC_F_PWRMAN_PWR_RST_CTRL_IO_ACTIVE |
mbed_official 514:7668256dbe61 136 MXC_F_PWRMAN_PWR_RST_CTRL_PULLUPS_ENABLED);
mbed_official 514:7668256dbe61 137
mbed_official 514:7668256dbe61 138 MXC_PWRSEQ->reg0 |= MXC_F_PWRSEQ_REG0_PWR_CHZYEN_RUN;
mbed_official 514:7668256dbe61 139
mbed_official 514:7668256dbe61 140 // set systick to the RTC input 32.768kHz clock, not system clock; this is needed to keep JTAG alive during sleep
mbed_official 514:7668256dbe61 141 MXC_CLKMAN->clk_ctrl |= MXC_F_CLKMAN_CLK_CTRL_RTOS_MODE;
mbed_official 514:7668256dbe61 142
mbed_official 514:7668256dbe61 143 SystemCoreClockUpdate();
mbed_official 514:7668256dbe61 144 }