--- /dev/null
+/****************************************************************************
+ * apps/dev_usb/main.c
+ *
+ * sub1G_module support code - USB version
+ *
+ * Copyright 2013-2014 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 "drivers/ssp.h"
+#include "drivers/i2c.h"
+#include "drivers/adc.h"
+#include "extdrv/cc1101.h"
+#include "extdrv/status_led.h"
+#include "extdrv/tmp101_temp_sensor.h"
+
+
+#define MODULE_VERSION 0x02
+#define MODULE_NAME "RF Sub1G - USB"
+
+
+#define RF_868MHz 1
+#define RF_915MHz 0
+#if ((RF_868MHz) + (RF_915MHz) != 1)
+#error Either RF_868MHz or RF_915MHz MUST be defined.
+#endif
+
+
+#define DEBUG 1
+#define BUFF_LEN 60
+
+#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 },
+ /* 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_AD0_PIO_0_30, LPC_IO_ANALOG },
+ { LPC_ADC_AD1_PIO_0_31, LPC_IO_ANALOG },
+ { LPC_ADC_AD2_PIO_1_0, LPC_IO_ANALOG },
+ ARRAY_LAST_PIO,
+};
+
+const struct pio cc1101_cs_pin = LPC_GPIO_0_15;
+const struct pio cc1101_miso_pin = LPC_SSP0_MISO_PIO_0_16;
+const struct pio cc1101_gdo0 = LPC_GPIO_0_6;
+const struct pio cc1101_gdo2 = LPC_GPIO_0_7;
+
+#define TMP101_ADDR 0x94
+struct tmp101_sensor_config tmp101_sensor = {
+ .addr = TMP101_ADDR,
+ .resolution = TMP_RES_ELEVEN_BITS,
+};
+const struct pio temp_alert = LPC_GPIO_0_3;
+
+const struct pio status_led_green = LPC_GPIO_0_28;
+const struct pio status_led_red = LPC_GPIO_0_29;
+
+
+#define ADC_VBAT LPC_ADC_NUM(0)
+#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();
+ /* 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);
+}
+
+
+
+/***************************************************************************** */
+/* Temperature */
+/* The Temperature Alert pin is on GPIO Port 0, pin 7 (PIO0_7) */
+/* The I2C Temperature sensor is at address 0x94 */
+void WAKEUP_Handler(void)
+{
+}
+
+void temp_config()
+{
+ int ret = 0;
+
+ /* Temp Alert */
+ config_gpio(&temp_alert, LPC_IO_MODE_PULL_UP, GPIO_DIR_IN, 0);
+ /* FIXME : add a callback on temp_alert edge */
+
+ /* Temp sensor */
+ ret = tmp101_sensor_config(&tmp101_sensor);
+ if (ret != 0) {
+ serial_write(0, "Temp config error\r\n", 19);
+ }
+}
+
+/******************************************************************************/
+/* RF Communication */
+#define RF_BUFF_LEN 64
+
+static volatile int check_rx = 0;
+void rf_rx_calback(uint32_t gpio)
+{
+ check_rx = 1;
+}
+
+static uint8_t rf_specific_settings[] = {
+ CC1101_REGS(gdo_config[2]), 0x07, /* GDO_0 - Assert on CRC OK | Disable temp sensor */
+ CC1101_REGS(gdo_config[0]), 0x2E, /* GDO_2 - FIXME : do something usefull with it for tests */
+ CC1101_REGS(pkt_ctrl[0]), 0x0F, /* Accept all sync, CRC err auto flush, Append, Addr check and Bcast */
+#if (RF_915MHz == 1)
+ /* FIXME : Add here a define protected list of settings for 915MHz configuration */
+#endif
+};
+
+/* RF config */
+void rf_config(void)
+{
+ config_gpio(&cc1101_gdo0, LPC_IO_MODE_PULL_UP, GPIO_DIR_IN, 0);
+ cc1101_init(0, &cc1101_cs_pin, &cc1101_miso_pin); /* ssp_num, cs_pin, miso_pin */
+ /* Set default config */
+ cc1101_config();
+ /* And change application specific settings */
+ cc1101_update_config(rf_specific_settings, sizeof(rf_specific_settings));
+ set_gpio_callback(rf_rx_calback, &cc1101_gdo0, EDGE_RISING);
+
+#ifdef DEBUG
+ if (1) {
+ char buff[BUFF_LEN];
+ int len = 0;
+ len = snprintf(buff, BUFF_LEN, "CC1101 RF link init done.\r\n");
+ serial_write(0, buff, len);
+ }
+#endif
+}
+
+void handle_rf_rx_data(void)
+{
+ char buff[BUFF_LEN];
+ int len = 0;
+ uint8_t data[RF_BUFF_LEN];
+ int8_t ret = 0;
+ uint8_t status = 0;
+
+ /* Check for received packet (and get it if any) */
+ ret = cc1101_receive_packet(data, RF_BUFF_LEN, &status);
+ /* Go back to RX mode */
+ cc1101_enter_rx_mode();
+
+#ifdef DEBUG
+ if (1) {
+ len = snprintf(buff, BUFF_LEN, "RF: ret:%d, st: %d.\r\n", ret, status);
+ serial_write(0, buff, len);
+ }
+#endif
+
+ switch (data[2]) {
+ case 'T':
+ {
+ uint16_t val = 0;
+ int deci_degrees = 0;
+ /* Read the temperature */
+ if (tmp101_sensor_read(&tmp101_sensor, &val, &deci_degrees) != 0) {
+ serial_write(0, "Temp read error\r\n", 19);
+ } else {
+ len = snprintf(buff, 40, "Temp read: %d,%d - raw: 0x%04x.\r\n",
+ (deci_degrees/10), (deci_degrees%10), val);
+ serial_write(0, buff, len);
+ }
+ }
+ break;
+ case 'V':
+ {
+ uint16_t val = 0;
+ /* Get and display the battery voltage */
+ if (adc_get_value(&val, ADC_VBAT) >= 0) {
+ int milli_volts = ((val * 32) / 10);
+ len = snprintf(buff, 40, "Vbat: %d (raw: 0x%04x)\r\n", (milli_volts * 2), val);
+ serial_write(0 , buff, len);
+ }
+ }
+ break;
+ }
+}
+
+
+/* Data sent on radio comes from the UART, put any data received from UART in
+ * cc_tx_buff and send when either '\r' or '\n' is received.
+ * This function is very simple and data received between cc_tx flag set and
+ * cc_ptr rewind to 0 may be lost. */
+static volatile uint32_t cc_tx = 0;
+static volatile uint8_t cc_tx_buff[RF_BUFF_LEN];
+static volatile uint8_t cc_ptr = 0;
+void handle_uart_cmd(uint8_t c)
+{
+ if (cc_ptr < RF_BUFF_LEN) {
+ cc_tx_buff[cc_ptr++] = c;
+ } else {
+ cc_ptr = 0;
+ }
+ if ((c == '\n') || (c == '\r')) {
+ cc_tx = 1;
+ }
+}
+
+void send_on_rf(void)
+{
+ uint8_t cc_tx_data[RF_BUFF_LEN + 2];
+ uint8_t tx_len = cc_ptr;
+ int ret = 0;
+
+ /* Create a local copy */
+ memcpy((char*)&(cc_tx_data[2]), (char*)cc_tx_buff, tx_len);
+ /* "Free" the rx buffer as soon as possible */
+ cc_ptr = 0;
+ /* Prepare buffer for sending */
+ cc_tx_data[0] = tx_len + 1;
+ cc_tx_data[1] = 0; /* Broadcast */
+ /* Send */
+ if (cc1101_tx_fifo_state() != 0) {
+ cc1101_flush_tx_fifo();
+ }
+ ret = cc1101_send_packet(cc_tx_data, (tx_len + 2));
+
+#ifdef DEBUG
+ {
+ /* Give some feedback on UART 0 */
+ char buff[BUFF_LEN];
+ int len = 0;
+ len = snprintf(buff, BUFF_LEN, "Tx ret: %d\r\n", ret);
+ serial_write(0, buff, len);
+ }
+#endif
+}
+
+
+/***************************************************************************** */
+int main(void) {
+ system_init();
+ uart_on(0, 115200, handle_uart_cmd);
+ ssp_master_on(0, LPC_SSP_FRAME_SPI, 8, 4*1000*1000); /* bus_num, frame_type, data_width, rate */
+ i2c_on(I2C_CLK_100KHz);
+ adc_on();
+ status_led_config(&status_led_green, &status_led_red);
+
+ /* Radio */
+ rf_config();
+
+ /* Temperature sensor */
+ temp_config();
+
+ while (1) {
+ uint8_t status = 0;
+ /* Request a Temp conversion on I2C TMP101 temperature sensor */
+ tmp101_sensor_start_conversion(&tmp101_sensor); /* A conversion takes about 40ms */
+ /* Start an ADC conversion to get battery voltage */
+ adc_start_convertion_once(ADC_VBAT, 0);
+
+ /* Tell we are alive :) */
+ chenillard(250);
+
+ /* RF */
+ if (cc_tx == 1) {
+ send_on_rf();
+ cc_tx = 0;
+ }
+ /* Do not leave radio in an unknown or unwated state */
+ do {
+ status = (cc1101_read_status() & CC1101_STATE_MASK);
+ } while (status == CC1101_STATE_TX);
+
+ if (status != CC1101_STATE_RX) {
+ static uint8_t loop = 0;
+ loop++;
+ if (loop > 10) {
+ if (cc1101_rx_fifo_state() != 0) {
+ cc1101_flush_rx_fifo();
+ }
+ cc1101_enter_rx_mode();
+ loop = 0;
+ }
+ }
+ if (check_rx == 1) {
+ check_rx = 0;
+ handle_rf_rx_data();
+ }
+ }
+ return 0;
+}
+
+
+
+
