From: Nathael Pajani Date: Sat, 13 May 2017 18:54:18 +0000 (+0200) Subject: Adding application for Exanh water level sensors (bord v04) X-Git-Url: http://git.techno-innov.fr/?a=commitdiff_plain;h=25ce49481d0522395f2fb4c3a17d3e3f4a9d8bbc;p=soft%2Flpc82x%2Fexanh Adding application for Exanh water level sensors (bord v04) --- diff --git a/v04/Makefile b/v04/Makefile new file mode 100644 index 0000000..a944f0f --- /dev/null +++ b/v04/Makefile @@ -0,0 +1,12 @@ +# Makefile for exanh apps + +MODULE = $(shell basename $(shell cd .. && pwd && cd -)) +NAME = $(shell basename $(CURDIR)) + +.PHONY: $(NAME).bin +$(NAME).bin: + @make -C ../../.. --no-print-directory NAME=$(NAME) MODULE=$(MODULE) apps/$(MODULE)/$(NAME)/$@ + +clean mrproper: + @make -C ../../.. --no-print-directory $@ + diff --git a/v04/README b/v04/README new file mode 100644 index 0000000..6ce3aeb --- /dev/null +++ b/v04/README @@ -0,0 +1,77 @@ +Exanh Gardener soil moisture sensor support. + +Copyright 2017 Nathael Pajani + + +/* **************************************************************************** + * 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 . + * + *************************************************************************** */ + + +This code handles the v0.2 and v0.3 versions of the Exanh Gardener soil +moisture sensor. + +The code also provides support of all three sensors found on exanh sensor board +in version 0.2 : + - BME280 I2C temperature, humidity and pressure sensor + - TSL256x I2C luminosity and IR sensor + - VEML6070 I2C UV sensor + +The default behavior for the sensor does nothing (should enter sleep, but not +implemented yet). +When the sensor is not configured (no address set), then all data received on +serial is silently dropped. +Pressing the "Mode" button on the sensor for more than 4 seconds sends a "c" +request on the serial line, changes address to 0 (nul), and enters the +"address requested" state. The host should then send a message to the sensor on +it's temporary address, containing it's new address. The message is three bytes +long and it's format is : + # 0 addr + 0x23 0x00 (0x01 to 0x1F) +Addresses are between 1 and 31, allowing up to 30 sensors on one link. + +Once the address is set, the host can request samples data by sending a message +addressed to the sensor. +The message is three or more bytes long (depending on the type) and it's +format is : + # addr type [other data] + 0x23 (0x01 to 0x1F) (0x00 to 0xFF) [....] +Valid types are : + - 'a' : all - request to send all available sensor data to host. + - 'l' : set led color - set the sensor led color. Three bytes of data (RGB). + +It is also possible to broadcast a message to all sensors by sending to address +255 (0xFF) + + +To set the sensor address using a serial line from a linux host, you can use +these commands (sensor connected to ttyUSB0) : + +# For device address 1 (0x01) : +echo -ne "#\x00\x01" > /dev/ttyUSB0 + +# For device address 2 (0x02) : +echo -ne "#\x00\x02" > /dev/ttyUSB0 + +# and so on ... +[...] + +# To check what these command send if you are not sure : +echo -ne "#\x00\x01" | hexdump -C + + +When debug is set at compile time, then debug data is sent on UART0 + + diff --git a/v04/main.c b/v04/main.c new file mode 100644 index 0000000..e63189c --- /dev/null +++ b/v04/main.c @@ -0,0 +1,504 @@ +/**************************************************************************** + * sensors/main.c + * + * Exanh Gardener soil moisture sensor support. + * + * Copyright 2016-2017 Nathael Pajani + * + * + * 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 . + * + *************************************************************************** */ + + +#include "lib/stdint.h" +#include "core/system.h" +#include "core/systick.h" +#include "core/watchdog.h" +#include "core/pio.h" +#include "core/iap.h" +#include "lib/stdio.h" +#include "drivers/i2c.h" +#include "drivers/adc.h" +#include "drivers/serial.h" +#include "drivers/gpio.h" +#include "drivers/timers.h" + +#include "extdrv/ws2812.h" +#include "extdrv/tsl256x_light_sensor.h" +#include "extdrv/veml6070_uv_sensor.h" +#include "extdrv/bme280_humidity_sensor.h" + + +#define MODULE_VERSION 0x04 +#define MODULE_NAME "E-Xanh Gardener" + +#define SELECTED_FREQ FREQ_SEL_36MHz + + +#define DEBUG 0 +#if (DEBUG == 1) + #define debug_printf(...) \ + gpio_clear(tx_en); \ + uprintf(__VA_ARGS__); \ + gpio_set(tx_en); + + #define debug(cond, ...) \ + if (cond) { \ + gpio_clear(tx_en); \ + uprintf(UART0, __VA_ARGS__ ); \ + gpio_set(tx_en); \ + } + +#else + #define debug_printf(...) ; + #define debug(...) ; +#endif + +/***************************************************************************** */ +/* 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_GPIO_0_0, LPC_UART0_RX, 0 }, + { LPC_GPIO_0_4, LPC_UART0_TX, 0 }, + /* I2C 0 */ + { LPC_I2C0_SCL_PIO_0_10, LPC_FIXED, 0 }, + { LPC_I2C0_SDA_PIO_0_11, LPC_FIXED, 0 }, + /* ADC */ + { LPC_ADC_AD9_PIO_0_17, LPC_FIXED, 0 }, + /* Timers */ + { LPC_GPIO_0_9, LPC_SCT_POUT0, 0 }, + /* GPIO */ + { LPC_GPIO_0_2, LPC_GPIO, 0 }, /* Led */ + { LPC_GPIO_0_3, LPC_GPIO, 0 }, /* Tx enable */ + ARRAY_LAST_PIO, +}; + +/* Configure pins as used for capacitance sensing */ +const struct pio_config capacitance_pins[] = { + { LPC_GPIO_0_9, LPC_SCT_POUT0, 0 }, + { LPC_ADC_AD9_PIO_0_17, LPC_FIXED, 0 }, + ARRAY_LAST_PIO, +}; + + +const struct pio button = LPC_GPIO_0_13; /* Mode button */ +const struct pio ws2812_data_out_pin = LPC_GPIO_0_2; /* Led control data pin */ +const struct pio tx_en = LPC_GPIO_0_3; /* Enable comminication output */ + +const struct pio cap_trig_gpio = LPC_GPIO_0_9; +const struct pio cap_adc_gpio = LPC_GPIO_0_17; + + +/***************************************************************************** */ +/* External Sensors */ + +/* Note : 8bits address */ +#define BME280_ADDR 0xEC +struct bme280_sensor_config bme280_sensor = { + .bus_num = I2C0, + .addr = BME280_ADDR, + .humidity_oversampling = BME280_OS_x16, + .temp_oversampling = BME280_OS_x16, + .pressure_oversampling = BME280_OS_x16, + .mode = BME280_NORMAL, + .standby_len = BME280_SB_62ms, + .filter_coeff = BME280_FILT_OFF, +}; + + + +/***************************************************************************** */ +/* Luminosity */ + +/* Note : These are 8bits address */ +#define TSL256x_ADDR 0x52 /* Pin Addr Sel (pin2 of tsl256x) connected to GND */ +struct tsl256x_sensor_config tsl256x_sensor = { + .bus_num = I2C0, + .addr = TSL256x_ADDR, + .gain = TSL256x_LOW_GAIN, + .integration_time = TSL256x_INTEGRATION_100ms, + .package = TSL256x_PACKAGE_T, +}; + + + + +/***************************************************************************** */ +/* UV */ + +/* The I2C UV light sensor is at addresses 0x70, 0x71 and 0x73 */ +/* Note : These are 8bits address */ +#define VEML6070_ADDR 0x70 +struct veml6070_sensor_config veml6070_sensor = { + .bus_num = I2C0, + .addr = VEML6070_ADDR, +}; + + + +/***************************************************************************** */ +/* Soil humidity sensor */ + +uint16_t raw_humidity = 0; +void soil_humidity_sample(void) +{ + /* Get ADC values */ + adc_get_value(&raw_humidity, LPC_ADC(9)); +} + + +/* Set led */ +void set_led(uint8_t red, uint8_t green, uint8_t blue) +{ + ws2812_set_pixel(0, red, green, blue); + ws2812_send_frame(0); +} + + + +/***************************************************************************** */ +void system_init() +{ + 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) +{ + debug_printf(UART0, name); + while (1); +} + +const struct lpc_timer_pwm_config pwm_conf = { + .nb_channels = 1, + .period = 30, + .outputs_initial_state = 0x01, + .match_values = { 10, }, + .outputs = { 0, }, +}; + + +enum states { + IDLE = 0, + MSG_START, + ADDRESSSED, + NEED_DATA, +}; +#define MSG_FIRST_BYTE '#' +volatile uint8_t send_data = 0; +volatile uint8_t req_cmd = 0; +volatile uint8_t req_data_len = 0; +#define DATA_LEN_MAX 8 +volatile uint8_t req_data[DATA_LEN_MAX]; + +volatile uint8_t address = 0; +volatile uint8_t store_address = 0; +volatile uint8_t addr_req = 0; + +/* serial_req */ +void serial_req(uint8_t c) +{ + static int state = IDLE; + static uint8_t req_need_data_len = 0; + static uint8_t tmp_req_cmd = 0; + switch (state) { + case IDLE: + if (c == MSG_FIRST_BYTE) { + state = MSG_START; + } + break; + + case MSG_START: + if ((c == address) || (c == 0xFF)) { + state = ADDRESSSED; + } else { + state = IDLE; + } + break; + + case ADDRESSSED: + if ((address == 0) & (addr_req == 1)) { + /* We received our address, store it */ + address = c; + store_address = 1; + state = IDLE; + break; + } + switch (c) { + case 'a': + send_data = 1; + state = IDLE; + break; + case 'l': + req_need_data_len = 3; + tmp_req_cmd = 'l'; + state = NEED_DATA; + break; + } + break; + + case NEED_DATA: + req_data[req_data_len++] = c; + if (req_data_len >= req_need_data_len) { + req_need_data_len = 0; + state = IDLE; + req_cmd = tmp_req_cmd; + tmp_req_cmd = 0; + } + break; + + default: + state = IDLE; + } +} + +/* Should check button "hold" duration and act accordingly + * When pressed with no addresss : should request address from host + */ +volatile uint8_t need_config = 0; +void button_request(uint32_t gpio) +{ + static uint32_t tick_press_date = 0; + int delta; + if (gpio_read(button) == 0) { + tick_press_date = systick_get_tick_count(); + return; + } + delta = systick_get_tick_count() - tick_press_date; + if (delta < 0) { + return; /* Timer wrapped while reading button hold duration ... let user press again. */ + } + if (address == 0) { + need_config = 1; + return; + } + if (delta < 2000) { + /* Send a sample .... */ + /* This should enter the "menu" loop */ + send_data = 1; + } else { + address = 0; + need_config = 1; + } +} +/***************************************************************************** */ +int main(void) +{ + uint8_t got_tsl = 1, got_veml = 1, got_bme = 1; + /* TSL2561 and VEML6070 */ + uint16_t uv = 0, ir = 0; + uint32_t lux = 0; + /* BME280 */ + uint32_t pressure = 0, temp = 0; + uint16_t humidity = 0; + int comp_temp = 0; + int ret = 0; + + system_init(); + + /* Communication */ + uart_on(UART0, 115200, serial_req); + config_gpio(&tx_en, 0, GPIO_DIR_OUT, 1); + + /* ADC */ + config_gpio(&cap_trig_gpio, 0, GPIO_DIR_OUT, 0); + config_gpio(&cap_adc_gpio, 0, GPIO_DIR_OUT, 0); + adc_on(NULL); + adc_start_burst_conversion(ADC_MCH(9), LPC_ADC_SEQA); + debug_printf(UART0, "ADC config done\n"); + + /* Led strip configuration */ + ws2812_config(&ws2812_data_out_pin); + debug_printf(UART0, "Led config done\n"); + + /* Timer config */ + timer_on(LPC_SCT, (10 * 1000 * 1000), NULL); + timer_pwm_config(LPC_SCT, &pwm_conf); + debug_printf(UART0, "Timer config done\n"); + + /* Start sampling */ + set_pins(capacitance_pins); + timer_start(LPC_SCT); + + /* Register callback on button */ + set_gpio_callback(button_request, &button, EDGES_BOTH); + + i2c_on(I2C0, I2C_CLK_100KHz, I2C_MASTER); + + msleep(10); + + /* Configure lux sensor */ + ret = tsl256x_configure(&tsl256x_sensor); + if (ret != 0) { + got_tsl = 0; + debug_printf(UART0, "Lux config error: %d\n", ret); + } + msleep(10); + + /* Configure uv sensor */ + ret = veml6070_configure(&veml6070_sensor); + if (ret != 0) { + got_veml = 0; + debug_printf(UART0, "UV config error: %d\n", ret); + } + msleep(10); + + /* Configure barometric + humidity + temp sensor */ + ret = bme280_configure(&bme280_sensor); + if (ret != 0) { + got_bme = 0; + debug_printf(UART0, "Humidity config error: %d\n", ret); + } + msleep(10); + + /* Read our address from Flash */ + memcpy((void*)&address, (void*)(0x00003FC0), 1); + if (address == 0) { + /* No sensor should have adrress 0, which is reserved for the "waiting for new address" state */ + address = 255; + } + debug_printf(UART0, "Address: %d\n", address); + + send_data = 0; + store_address = 0; + req_cmd = 0; + need_config = 0; + + while (1) { + + /* Enter sleep / low-power ? */ + + /* Leave some time for the others */ + msleep(50); /* Add some delay */ + + if (store_address == 1) { + char buf[64] = ""; + store_address = 0; + + ret = iap_prepare_flash(15, 15); /* Prepare sector 15 (16K flash size) for erase */ + debug((ret != IAP_STATUS_CMD_SUCCESS), "Error preparing flash: %d\n", ret); + + ret = iap_erase_flash_pages(255, 255); /* Erase the last page of the Flash */ + debug((ret != IAP_STATUS_CMD_SUCCESS), "Error erasing page 255: %d\n", ret); + + ret = iap_prepare_flash(15, 15); /* Prepare sector 15 (16K flash size) for write */ + debug((ret != IAP_STATUS_CMD_SUCCESS), "Error preparing flash: %d\n", ret); + + buf[0] = address; + ret = iap_copy_ram_to_flash(0x00003FC0, (uint32_t)(&buf), 64); + debug((ret != IAP_STATUS_CMD_SUCCESS), "Error writting our number: %d\n", ret); + + debug(1, "Changed our address to %d\n", address); + } + + if (req_cmd != 0) { + switch (req_cmd) { + case 'l': + set_led(req_data[0], req_data[1], req_data[2]); + debug(1, "Set led to %d %d %d\n", req_data[0], req_data[1], req_data[2]); + break; + + default: + debug(1, "Unhandled command 0x%02x (%c)\n", req_cmd, req_cmd); + } + req_cmd = 0; + req_data_len = 0; + } + + /* Get hold of Tx line */ + if (need_config == 1) { + /* Request a new address from host */ + gpio_clear(tx_en); + if (serial_send_quickbyte(UART0, 'c') == 0) { + addr_req = 1; + need_config = 0; + } + gpio_set(tx_en); + } + + if (send_data == 1) { + send_data = 0; + /* Take humidity sample */ + soil_humidity_sample(); + + if (got_tsl == 1) { + ret = tsl256x_sensor_read(&tsl256x_sensor, NULL, &ir, &lux); + debug((ret != 0), "Lux read error: %d\n", ret); + msleep(2); + } + if (got_veml == 1) { + ret = veml6070_sensor_read(&veml6070_sensor, &uv); + debug((ret != 0), "UV read error: %d\n", ret); + msleep(2); + } + if (got_bme == 1) { + ret = bme280_sensor_read(&bme280_sensor, &pressure, &temp, &humidity); + debug((ret != 0), "Humidity read error: %d\n", ret); + + comp_temp = bme280_compensate_temperature(&bme280_sensor, temp) / 10; + pressure = bme280_compensate_pressure(&bme280_sensor, pressure) / 100; + humidity = bme280_compensate_humidity(&bme280_sensor, humidity) / 10; + } + + /* Display all */ + debug(1, "Sensor %d:\n\tSoil: %d\n", address, raw_humidity); + debug(1, "\tLux: %d, IR: %d, UV: %d\n", lux, ir, uv); + debug(1, "\tPatm: %d hPa, Temp: %d,%02d degC, Humidity: %d,%d rH\n\n", + pressure, + comp_temp / 10, (comp_temp > 0) ? (comp_temp % 10) : ((-comp_temp) % 10), + humidity / 10, humidity % 10); + + set_led(0, 0, ((raw_humidity >> 6) & 0xFF)); + + /* Send for control */ + if (1) { + char buff[20]; + uint16_t* data = (uint16_t*)buff; + + buff[0] = '#'; + buff[1] = address | (got_tsl << 5) | (got_veml << 6) | (got_bme << 7); + data[1] = (uint16_t)raw_humidity; + data[2] = (uint16_t)lux; + data[3] = (uint16_t)ir; + data[4] = (uint16_t)uv; + data[5] = (uint16_t)pressure; + data[6] = (uint16_t)comp_temp; + data[7] = (uint16_t)humidity; + + gpio_clear(tx_en); + serial_write(UART0, buff, 20); + gpio_set(tx_en); + } + } + } + + return 0; +} +