--- /dev/null
+/****************************************************************************
+ * main.c
+ *
+ * KNX support example
+ *
+ * Copyright 2015 Nathael Pajani <nathael.pajani@ed3l.fr>
+ *
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *************************************************************************** */
+
+
+#include <stdint.h>
+#include "core/lpc_regs_12xx.h"
+#include "core/lpc_core_cm0.h"
+#include "core/pio.h"
+#include "core/system.h"
+#include "core/systick.h"
+#include "lib/stdio.h"
+#include "drivers/serial.h"
+#include "drivers/gpio.h"
+#include "extdrv/status_led.h"
+#include "extdrv/ncn5120.h"
+
+
+#define MODULE_VERSION 0x04
+#define MODULE_NAME "KNX Module"
+
+#define SELECTED_FREQ FREQ_SEL_48MHz
+
+/***************************************************************************** */
+/* Pins configuration */
+/* pins blocks are passed to set_pins() for pins configuration.
+ * Unused pin blocks can be removed safely with the corresponding set_pins() call
+ * All pins blocks may be safelly merged in a single block for single set_pins() call..
+ */
+const struct pio_config common_pins[] = {
+ /* UART 0 */
+ { LPC_UART0_RX_PIO_0_1, LPC_IO_DIGITAL },
+ { LPC_UART0_TX_PIO_0_2, LPC_IO_DIGITAL },
+ /* UART 1 (KNX) */
+ { LPC_UART1_RX_PIO_0_8, LPC_IO_DIGITAL },
+ { LPC_UART1_TX_PIO_0_9, LPC_IO_DIGITAL },
+ /* I2C 0 */
+ { LPC_I2C0_SCL_PIO_0_10, (LPC_IO_DIGITAL | LPC_IO_OPEN_DRAIN_ENABLE) },
+ { LPC_I2C0_SDA_PIO_0_11, (LPC_IO_DIGITAL | LPC_IO_OPEN_DRAIN_ENABLE) },
+ /* SPI */
+ { LPC_SSP0_SCLK_PIO_0_14, LPC_IO_DIGITAL },
+ { LPC_SSP0_MOSI_PIO_0_17, LPC_IO_DIGITAL },
+ { LPC_SSP0_MISO_PIO_0_16, LPC_IO_DIGITAL },
+ /* ADC */
+ { LPC_ADC_AD1_PIO_0_31, LPC_IO_ANALOG },
+ { LPC_ADC_AD2_PIO_1_0, LPC_IO_ANALOG },
+ /* Timer 3 */
+#define LPC_TIMER_PIN_CONFIG (LPC_IO_MODE_PULL_UP | LPC_IO_DIGITAL | LPC_IO_DRIVE_HIGHCURENT)
+ { LPC_TIMER_32B1_M0_PIO_0_23, LPC_TIMER_PIN_CONFIG },
+ { LPC_TIMER_32B1_M1_PIO_0_24, LPC_TIMER_PIN_CONFIG },
+ /* User GPIO */
+ { LPC_GPIO_0_0, LPC_IO_DIGITAL },
+ { LPC_GPIO_0_25, LPC_IO_DIGITAL },
+ { LPC_GPIO_0_26, LPC_IO_DIGITAL },
+ /* KNX GPIO */
+ { LPC_GPIO_0_6, LPC_IO_DIGITAL },
+ { LPC_GPIO_0_7, LPC_IO_DIGITAL },
+ ARRAY_LAST_PIO,
+};
+
+/*
+ * RESETB and SAVEB pin
+ * The RESETB signal can be used to keep the host controller in a reset state. When RESETB is low this
+ * indicates that the bus voltage is too low for normal operation and that the fixed DC−DC converter
+ * has not started up. It could also indicate a Thermal Shutdown (TSD). The RESETB signal also indicates
+ * if communication between host and NCN5120 is possible.
+ *
+ * The SAVEB signal indicates correct operation. When SAVEB goes low, this indicates a possible issue
+ * (loss of bus power or too high temperature) which could trigger the host controller to save critical
+ * data or go to a save state.
+ *
+ * RESETB− and SAVEB−pin are open−drain pins with an internal pull−up resistor to VDDD.
+ */
+const struct pio knx_reset = LPC_GPIO_0_6;
+const struct pio knx_save = LPC_GPIO_0_7;
+
+const struct pio status_led_green = LPC_GPIO_0_28;
+const struct pio status_led_red = LPC_GPIO_0_29;
+
+#define ADC_EXT1 LPC_ADC_NUM(1)
+#define ADC_EXT2 LPC_ADC_NUM(2)
+
+
+
+/***************************************************************************** */
+void system_init()
+{
+ /* Stop the watchdog */
+ stop_watchdog(); /* Do it right now, before it gets a chance to break in */
+
+ /* Note: Brown-Out detection must be powered to operate the ADC. adc_on() will power
+ * it back on if called after system_init() */
+ system_brown_out_detection_config(0);
+ system_set_default_power_state();
+ clock_config(SELECTED_FREQ);
+ set_pins(common_pins);
+ gpio_on();
+ status_led_config(&status_led_green, &status_led_red);
+ /* System tick timer MUST be configured and running in order to use the sleeping
+ * functions */
+ systick_timer_on(1); /* 1ms */
+ systick_start();
+}
+
+/* Define our fault handler. This one is not mandatory, the dummy fault handler
+ * will be used when it's not overridden here.
+ * Note : The default one does a simple infinite loop. If the watchdog is deactivated
+ * the system will hang.
+ */
+void fault_info(const char* name, uint32_t len)
+{
+ serial_write(0, name, len);
+ /* Wait for end of Tx */
+ serial_flush(0);
+ /* FIXME : Perform soft reset of the micro-controller ! */
+ while (1);
+}
+
+void send_for_echo(uint8_t c)
+{
+ struct lpc_uart* uart1 = LPC_UART_1;
+ uart1->func.buffer = c;
+ status_led(red_on);
+}
+void got_echo(uint8_t c)
+{
+ struct lpc_uart* uart0 = LPC_UART_0;
+ uart0->func.buffer = (c + 1);
+ status_led(green_on);
+}
+
+
+/***************************************************************************** */
+int main(void) {
+ system_init();
+ uart_on(0, 115200, send_for_echo);
+ uart_on(1, 38400, got_echo);
+
+
+ while (1) {
+ }
+ return 0;
+}
+
