Diff: source/hic_hal/nxp/lpc11u35/gpio.c

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/hic_hal/nxp/lpc11u35/gpio.c	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,156 @@
+/**
+ * @file    gpio.c
+ * @brief
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "LPC11Uxx.h"
+#include "gpio.h"
+#include "compiler.h"
+#include "IO_Config.h"
+#include "settings.h"
+#include "iap.h"
+
+static void busy_wait(uint32_t cycles)
+{
+    volatile uint32_t i;
+    i = cycles;
+
+    while (i > 0) {
+        i--;
+    }
+}
+
+void gpio_init(void)
+{
+    // enable clock for GPIO port 0
+    LPC_SYSCON->SYSAHBCLKCTRL |= (1UL << 6);
+#if defined(TARGET_POWER_HOLD)
+    // Target PowerHOLD port
+    PIN_PWH_IOCON = PIN_PWH_IOCON_INIT;
+    LPC_GPIO->CLR[PIN_PWH_PORT] = PIN_PWH;
+    LPC_GPIO->DIR[PIN_PWH_PORT] |= PIN_PWH;
+#endif
+    // configure GPIO-LED as output
+#if defined(CONTROLLED_POWER_LED)
+    // Power led (red)
+    PIN_POW_LED_IOCON = PIN_POW_LED_IOCON_INIT;
+    LPC_GPIO->CLR[PIN_POW_LED_PORT] = PIN_POW_LED;
+    LPC_GPIO->DIR[PIN_POW_LED_PORT] |= PIN_POW_LED;
+#endif
+    // DAP led (green)
+    PIN_DAP_LED_IOCON = PIN_DAP_LED_IOCON_INIT;
+    LPC_GPIO->SET[PIN_DAP_LED_PORT] = PIN_DAP_LED;
+    LPC_GPIO->DIR[PIN_DAP_LED_PORT] |= PIN_DAP_LED;
+    // MSD led (red)
+    PIN_MSD_LED_IOCON = PIN_MSD_LED_IOCON_INIT;
+    LPC_GPIO->SET[PIN_MSD_LED_PORT] = PIN_MSD_LED;
+    LPC_GPIO->DIR[PIN_MSD_LED_PORT] |= PIN_MSD_LED;
+    // Serial LED (blue)
+    PIN_CDC_LED_IOCON = PIN_CDC_LED_IOCON_INIT;
+    LPC_GPIO->SET[PIN_CDC_LED_PORT] = PIN_CDC_LED;
+    LPC_GPIO->DIR[PIN_CDC_LED_PORT] |= PIN_CDC_LED;
+    // configure Button(s) as input
+    PIN_RESET_IN_IOCON = PIN_RESET_IN_IOCON_INIT;
+    LPC_GPIO->DIR[PIN_RESET_IN_PORT] &= ~PIN_RESET_IN;
+    PIN_RESET_IN_FWRD_IOCON = PIN_RESET_IN_FWRD_IOCON_INIT;
+    LPC_GPIO->DIR[PIN_RESET_IN_FWRD_PORT] &= ~PIN_RESET_IN_FWRD;
+#if !defined(PIN_nRESET_FET_DRIVE)
+    // open drain logic for reset button
+    PIN_nRESET_IOCON = PIN_nRESET_IOCON_INIT;
+    LPC_GPIO->CLR[PIN_nRESET_PORT] = PIN_nRESET;
+    LPC_GPIO->DIR[PIN_nRESET_PORT] &= ~PIN_nRESET;
+#else
+    // FET drive logic for reset button
+    PIN_nRESET_IOCON = PIN_nRESET_IOCON_INIT;
+    LPC_GPIO->CLR[PIN_nRESET_PORT] = PIN_nRESET;
+    LPC_GPIO->DIR[PIN_nRESET_PORT] |= PIN_nRESET;
+#endif
+    /* Enable AHB clock to the FlexInt, GroupedInt domain. */
+    LPC_SYSCON->SYSAHBCLKCTRL |= ((1 << 19) | (1 << 23) | (1 << 24));
+    // Give the cap on the reset button time to charge
+    busy_wait(10000);
+
+    if (gpio_get_reset_btn() || config_ram_get_initial_hold_in_bl()) {
+        IRQn_Type irq;
+        // Disable SYSTICK timer and interrupt before calling into ISP
+        SysTick->CTRL &= ~(SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_TICKINT_Msk);
+
+        // Disable all nvic interrupts
+        for (irq = (IRQn_Type)0; irq < (IRQn_Type)32; irq++) {
+            NVIC_DisableIRQ(irq);
+            NVIC_ClearPendingIRQ(irq);
+        }
+
+        // If switching to "bootloader" mode then setup the watchdog
+        // so it will exit CRP mode after ~30 seconds
+        if (config_ram_get_initial_hold_in_bl()) {
+            LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 15); // Enable watchdog module
+            LPC_SYSCON->PDRUNCFG &= ~(1 << 6);      // Enable watchdog clock (WDOSC)
+            LPC_SYSCON->WDTOSCCTRL = (0xF << 5);    // Set max frequency - 2.3MHz
+            LPC_WWDT->CLKSEL = (1 << 0);            // Select watchdog clock
+            LPC_WWDT->TC = 0x00FFFFFF;              // Set time to reset to ~29s
+            LPC_WWDT->MOD = (1 << 0) | (1 << 1);    // Enable watchdog and set reset
+            LPC_WWDT->FEED = 0xAA;                  // Enable watchdog
+            LPC_WWDT->FEED = 0x55;
+        }
+
+        iap_reinvoke();
+    }
+}
+
+void gpio_set_hid_led(gpio_led_state_t state)
+{
+    if (state) {
+        LPC_GPIO->CLR[PIN_DAP_LED_PORT] = PIN_DAP_LED;
+    } else {
+        LPC_GPIO->SET[PIN_DAP_LED_PORT] = PIN_DAP_LED;
+    }
+}
+
+void gpio_set_cdc_led(gpio_led_state_t state)
+{
+    if (state) {
+        LPC_GPIO->CLR[PIN_CDC_LED_PORT] = PIN_CDC_LED;
+    } else {
+        LPC_GPIO->SET[PIN_CDC_LED_PORT] = PIN_CDC_LED;
+    }
+}
+
+void gpio_set_msc_led(gpio_led_state_t state)
+{
+    if (state) {
+        LPC_GPIO->CLR[PIN_MSD_LED_PORT] = PIN_MSD_LED;
+    } else {
+        LPC_GPIO->SET[PIN_MSD_LED_PORT] = PIN_MSD_LED;
+    }
+}
+
+uint8_t gpio_get_reset_btn_no_fwrd()
+{
+    return LPC_GPIO->PIN[PIN_RESET_IN_PORT] & PIN_RESET_IN ? 0 : 1;
+}
+
+uint8_t gpio_get_reset_btn_fwrd()
+{
+    return LPC_GPIO->PIN[PIN_RESET_IN_FWRD_PORT] & PIN_RESET_IN_FWRD ? 0 : 1;
+}
+
+void gpio_set_board_power(bool powerEnabled)
+{
+}