Hello
I am using sdk17 and st7735(GFX) drivers.
I am simply printing the sensor value on the display. Initially, it works well, but after a few minutes, the screen is cleared and the values are no longer updated.
Debugging does not produce errors, and sensor values continue to output well to the terminal. (Only the display seems to have a problem)
This is display code.
// Some ready-made 16-bit ('565') color settings:
#define GRAY 0xC618
#define RED 0xF800
#define BLUE 0x001F
#define BLACK 0x0000
#define WHITE 0xFFFF
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define ORANGE 0xFC00
extern const nrf_gfx_font_desc_t orkney_8ptFontInfo; //font
extern const nrf_gfx_font_desc_t orkney_24ptFontInfo; //font
extern const nrf_lcd_t nrf_lcd_st7735;
static const nrf_gfx_font_desc_t * text_font = &orkney_8ptFontInfo;
static const nrf_gfx_font_desc_t * title_font = &orkney_24ptFontInfo;
static const nrf_lcd_t * p_lcd = &nrf_lcd_st7735;
static void gfx_initialization(void)
{
APP_ERROR_CHECK(nrf_gfx_init(p_lcd));
}
char display_sensor[20];
static void display_sensor_print(void)
{
sprintf(display_sensor, "%d", new_adc_value);
nrf_gfx_point_t text_position = NRF_GFX_POINT(50,80); //position
APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_position, ORANGE, display_sensor, text_font, true)); //instance, position, color, string, pont, wrap
}
static void display_title_print(void)
{
nrf_gfx_point_t text_position = NRF_GFX_POINT(20,20); //position
APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_position, CYAN, "Title", title_font, true));
}
static void screen_clear(void)
{
nrf_gfx_screen_fill(p_lcd, WHITE);
}
static void rect_draw(void) //sensor value clear
{
nrf_gfx_rect_t rect_size = NRF_GFX_RECT(45,75,33,30); //x,y,width,height
APP_ERROR_CHECK(nrf_gfx_rect_draw(p_lcd, &rect_size, 1, WHITE, true)); //instance, position, Thickness of the border, color, fill(bool)
}
int main(void)
{
bool erase_bonds;
uint32_t err_code;
// Initialize.
uart_init();
log_init();
timers_init();
power_management_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
// Start execution.
printf("\r\nUART started.\r\n");
NRF_LOG_INFO("Debug logging for UART over RTT started.");
advertising_start();
//crypto
nrf_drv_clock_lfclk_request(NULL);
err_code = nrf_crypto_init();
APP_ERROR_CHECK(err_code);
err_code = nrf_mem_init();
APP_ERROR_CHECK(err_code);
//saadc
saadc_all_init();
//st7735
gfx_initialization();
screen_clear();
display_title_print();
// Enter main loop.
for (;;)
{
idle_state_handle();
if(new_adc_value > 0)
{
if(new_adc_value != prev_adc_value) //Compare to previous values
{
prev_adc_value = new_adc_value;
//display
//screen_clear();
rect_draw(); //instead of clear
display_sensor_print();
new_adc_value = 0;
}
}
}
}And this is my whole code. (main.c)
/** @file
*
* @defgroup ble_sdk_uart_over_ble_main main.c
* @{
* @ingroup ble_sdk_app_nus_eval
* @brief UART over BLE application main file.
*
* This file contains the source code for a sample application that uses the Nordic UART service.
* This application uses the @ref srvlib_conn_params module.
*/
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "ble_hci.h"
#include "ble_advdata.h"
#include "ble_advertising.h"
#include "ble_conn_params.h"
#include "nrf_sdh.h"
#include "nrf_sdh_soc.h"
#include "nrf_sdh_ble.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "app_timer.h"
#include "ble_nus.h"
#include "app_uart.h"
#include "app_util_platform.h"
#include "bsp_btn_ble.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_delay.h"
#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
//crypto
#include "nrf_drv_clock.h"
#include "nrf_drv_power.h"
#include "app_util.h"
#include "boards.h"
#include "nrf_crypto.h"
#include "nrf_crypto_error.h"
#include "mem_manager.h"
//saadc
#include "nrf_drv_saadc.h"
#include "nrf_drv_ppi.h"
#include "nrf_drv_timer.h"
//st7735
#include "nrf_gfx.h"
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define DEVICE_NAME "Medical level devic" /**< Name of device. Will be included in the advertising data. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_ADV_INTERVAL 64 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */
#define APP_ADV_DURATION 0 //18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(20, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(75, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */
#define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */
#define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */
#define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
BLE_NUS_DEF(m_nus, NRF_SDH_BLE_TOTAL_LINK_COUNT); /**< BLE NUS service instance. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
NRF_BLE_QWR_DEF(m_qwr); /**< Context for the Queued Write module.*/
BLE_ADVERTISING_DEF(m_advertising); /**< Advertising module instance. */
static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifier. */
{
{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}
};
/**@brief Function for assert macro callback.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyse
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] p_file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
/**@brief Function for initializing the timer module.
*/
static void timers_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for the GAP initialization.
*
* @details This function will set up all the necessary GAP (Generic Access Profile) parameters of
* the device. It also sets the permissions and appearance.
*/
static void gap_params_init(void)
{
uint32_t err_code;
ble_gap_conn_params_t gap_conn_params;
ble_gap_conn_sec_mode_t sec_mode;
BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode);
err_code = sd_ble_gap_device_name_set(&sec_mode,
(const uint8_t *) DEVICE_NAME,
strlen(DEVICE_NAME));
APP_ERROR_CHECK(err_code);
memset(&gap_conn_params, 0, sizeof(gap_conn_params));
gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL;
gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL;
gap_conn_params.slave_latency = SLAVE_LATENCY;
gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT;
err_code = sd_ble_gap_ppcp_set(&gap_conn_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling Queued Write Module errors.
*
* @details A pointer to this function will be passed to each service which may need to inform the
* application about an error.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void nrf_qwr_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for handling the data from the Nordic UART Service.
*
* @details This function will process the data received from the Nordic UART BLE Service and send
* it to the UART module.
*
* @param[in] p_evt Nordic UART Service event.
*/
/**@snippet [Handling the data received over BLE] */
static void nus_data_handler(ble_nus_evt_t * p_evt)
{
if (p_evt->type == BLE_NUS_EVT_RX_DATA)
{
uint32_t err_code;
NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);
for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
{
do
{
err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_BUSY);
}
if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
{
while (app_uart_put('\n') == NRF_ERROR_BUSY);
}
}
}
/**@snippet [Handling the data received over BLE] */
/**@brief Function for initializing services that will be used by the application.
*/
static void services_init(void)
{
uint32_t err_code;
ble_nus_init_t nus_init;
nrf_ble_qwr_init_t qwr_init = {0};
// Initialize Queued Write Module.
qwr_init.error_handler = nrf_qwr_error_handler;
err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init);
APP_ERROR_CHECK(err_code);
// Initialize NUS.
memset(&nus_init, 0, sizeof(nus_init));
nus_init.data_handler = nus_data_handler;
err_code = ble_nus_init(&m_nus, &nus_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling an event from the Connection Parameters Module.
*
* @details This function will be called for all events in the Connection Parameters Module
* which are passed to the application.
*
* @note All this function does is to disconnect. This could have been done by simply setting
* the disconnect_on_fail config parameter, but instead we use the event handler
* mechanism to demonstrate its use.
*
* @param[in] p_evt Event received from the Connection Parameters Module.
*/
static void on_conn_params_evt(ble_conn_params_evt_t * p_evt)
{
uint32_t err_code;
if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED)
{
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE);
APP_ERROR_CHECK(err_code);
}
}
/**@brief Function for handling errors from the Connection Parameters module.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void conn_params_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function for initializing the Connection Parameters module.
*/
static void conn_params_init(void)
{
uint32_t err_code;
ble_conn_params_init_t cp_init;
memset(&cp_init, 0, sizeof(cp_init));
cp_init.p_conn_params = NULL;
cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY;
cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY;
cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT;
cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID;
cp_init.disconnect_on_fail = false;
cp_init.evt_handler = on_conn_params_evt;
cp_init.error_handler = conn_params_error_handler;
err_code = ble_conn_params_init(&cp_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for putting the chip into sleep mode.
*
* @note This function will not return.
*/
static void sleep_mode_enter(void)
{
uint32_t err_code;
//uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE);
//APP_ERROR_CHECK(err_code);
//// Prepare wakeup buttons.
//err_code = bsp_btn_ble_sleep_mode_prepare();
//APP_ERROR_CHECK(err_code);
// Go to system-off mode (this function will not return; wakeup will cause a reset).
err_code = sd_power_system_off();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling advertising events.
*
* @details This function will be called for advertising events which are passed to the application.
*
* @param[in] ble_adv_evt Advertising event.
*/
static void on_adv_evt(ble_adv_evt_t ble_adv_evt)
{
uint32_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
//err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
//APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE: //When disconnected bluetooth, power off
//sleep_mode_enter();
break;
default:
break;
}
}
//check connection
int connection_state;
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
uint32_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected");
connection_state = 1;
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected");
connection_state = 0;
// LED indication will be changed when advertising starts.
m_conn_handle = BLE_CONN_HANDLE_INVALID;
break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
// Pairing not supported
err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_SYS_ATTR_MISSING:
// No system attributes have been stored.
err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for the SoftDevice initialization.
*
* @details This function initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED))
{
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
NRF_LOG_INFO("Data len is set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
}
NRF_LOG_DEBUG("ATT MTU exchange completed. central 0x%x peripheral 0x%x",
p_gatt->att_mtu_desired_central,
p_gatt->att_mtu_desired_periph);
}
/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
default:
break;
}
}
/**@brief Function for handling app_uart events.
*
* @details This function will receive a single character from the app_uart module and append it to
* a string. The string will be be sent over BLE when the last character received was a
* 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length.
*/
/**@snippet [Handling the data received over UART] */
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint8_t index = 0;
uint32_t err_code;
switch (p_event->evt_type)
{
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
index++;
if ((data_array[index - 1] == '\n') ||
(data_array[index - 1] == '\r') ||
(index >= m_ble_nus_max_data_len))
{
if (index > 1)
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
uint16_t length = (uint16_t)index;
err_code = ble_nus_data_send(&m_nus, data_array, &length, m_conn_handle);
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND))
{
APP_ERROR_CHECK(err_code);
}
} while (err_code == NRF_ERROR_RESOURCES);
}
index = 0;
}
break;
case APP_UART_COMMUNICATION_ERROR:
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@snippet [Handling the data received over UART] */
/**@brief Function for initializing the UART module.
*/
/**@snippet [UART Initialization] */
static void uart_init(void)
{
uint32_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_DISABLED,
.use_parity = false,
#if defined (UART_PRESENT)
.baud_rate = NRF_UART_BAUDRATE_115200
#else
.baud_rate = NRF_UARTE_BAUDRATE_115200
#endif
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */
/**@brief Function for initializing the Advertising functionality.
*/
static void advertising_init(void)
{
uint32_t err_code;
ble_advertising_init_t init;
memset(&init, 0, sizeof(init));
init.advdata.name_type = BLE_ADVDATA_FULL_NAME;
init.advdata.include_appearance = true; //false //Determines if Appearance shall be included (bluetooth Icon?)
//init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE; //For infinity scan
init.srdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.srdata.uuids_complete.p_uuids = m_adv_uuids;
init.config.ble_adv_fast_enabled = true;
init.config.ble_adv_fast_interval = APP_ADV_INTERVAL;
init.config.ble_adv_fast_timeout = APP_ADV_DURATION;
init.evt_handler = on_adv_evt;
err_code = ble_advertising_init(&m_advertising, &init);
APP_ERROR_CHECK(err_code);
ble_advertising_conn_cfg_tag_set(&m_advertising, APP_BLE_CONN_CFG_TAG);
}
/**@brief Function for initializing the nrf log module.
*/
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@brief Function for initializing power management.
*/
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
*
* @details If there is no pending log operation, then sleep until next the next event occurs.
*/
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
/**@brief Function for starting advertising.
*/
static void advertising_start(void)
{
uint32_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
//=====================================================================================
//AES CTR
int new_adc_value; //saadc
int prev_adc_value;
#define NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE (100) //(100)
#define AES_ERROR_CHECK(error) \
do { \
if (error) \
{ \
NRF_LOG_RAW_INFO("\r\nError = 0x%x\r\n%s\r\n", \
(error), \
nrf_crypto_error_string_get(error)); \
return; \
} \
} while (0);
/* Maximum allowed key = 256 bit */
static uint8_t m_key[32] = {'V', 'E', 'C', 'T', 'R', 'O', 'W',
'S', 'E', 'M', 'I', 'C', 'O', 'N', 'D', 'U', 'C', 'T', 'O', 'R',
'A', 'E', 'S', '&', 'C', 'T', 'R', ' ', 'T', 'E', 'S', 'T'};
/* Below text is used as plain text for encryption and decryption in AES CTR mode. */
//static char m_plain_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE] =
//{
// "AES CTR Mode Test"
//};
char m_plain_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE]; //100
static char m_encrypted_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE]; //encrypt
static char m_decrypted_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE]; //decrypt
//char encrypted_array[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE];
char app_encrypted_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE];
char app_plain_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE];
char app_label_text[NRF_CRYPTO_EXAMPLE_AES_MAX_TEXT_SIZE];
uint16_t length_app_encrypt;
static void text_print(char const* p_label, char const * p_text, size_t len)
{
uint32_t err_code;
NRF_LOG_RAW_INFO("-%s-\r\n", p_label);
NRF_LOG_FLUSH();
for(size_t i = 0; i < len; i++) //output sensor value
{
NRF_LOG_RAW_INFO("%c", p_text[i]);
NRF_LOG_FLUSH();
}
NRF_LOG_RAW_INFO("\r\n\r\n");
NRF_LOG_FLUSH();
}
//test
uint32_t check_nus_send;
static void hex_text_print(char const* p_label, char const * p_text, size_t len) //char const* p_label, char const * p_text, size_t len
{
uint32_t err_code;
NRF_LOG_RAW_INFO("-%s-\r\n", p_label);
NRF_LOG_FLUSH();
// Handle partial line (left)
for (size_t i = 0; i < len; i++) //len = 18
{
if (((i & 0xF) == 0) && (i > 0))
{
NRF_LOG_RAW_INFO("\r\n");
NRF_LOG_FLUSH();
}
NRF_LOG_RAW_INFO("%02x ", p_text[i]);
NRF_LOG_FLUSH();
//send to app (crypto sensor value) //problem : Only some data, not all data, has been sent
if(connection_state == 1)
{
sprintf(app_encrypted_text, "%02x ", p_text[i]);
//uint16_t length_app_encrypt = len;
length_app_encrypt = len;
err_code = ble_nus_data_send(&m_nus, &app_encrypted_text, &length_app_encrypt, m_conn_handle);
check_nus_send = err_code; //test
if ((err_code != NRF_ERROR_INVALID_STATE) &&
(err_code != NRF_ERROR_RESOURCES) &&
(err_code != NRF_ERROR_NOT_FOUND) &&
(err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING))
{
APP_ERROR_CHECK(err_code); //error when disconnted bluetooth? -> OK
}
nrf_delay_ms(10); //Used to prevent continuous transmission stop (change NRF_SDH_BLE_GAP_EVENT_LENGTH in config.h)
}
}
//test
//NRF_LOG_INFO("%d", check_nus_send); //err_code : NRF_ERROR_INVALID_STATE(Invalid state, operation disallowed in this state)
NRF_LOG_RAW_INFO("\r\n\r\n");
NRF_LOG_FLUSH();
}
static void plain_text_print(void)
{
text_print("Plain text", m_plain_text, strlen(m_plain_text));
//hex_text_print("Plain text (hex)", m_plain_text, strlen(m_plain_text));
}
static void encrypted_text_print(char const * p_text, size_t encrypted_len)
{
hex_text_print("Encrypted text (hex)", p_text, encrypted_len);
}
static void decrypted_text_print(char const * p_text, size_t decrypted_len)
{
text_print("Decrypted text", p_text, decrypted_len);
//hex_text_print("Decrypted text (hex)", p_text, decrypted_len);
}
static void crypt_ctr(void)
{
uint8_t iv[16];
ret_code_t ret_val;
size_t len_in;
size_t len_out;
static nrf_crypto_aes_context_t ctr_encr_128_ctx; // AES CTR encryption context
static nrf_crypto_aes_context_t ctr_decr_128_ctx; // AES CTR decryption context
plain_text_print();
/* Init encryption context for 128 bit key */
ret_val = nrf_crypto_aes_init(&ctr_encr_128_ctx,
&g_nrf_crypto_aes_ctr_128_info,
NRF_CRYPTO_ENCRYPT);
AES_ERROR_CHECK(ret_val);
/* Set key for encryption context - only first 128 key bits will be used */
ret_val = nrf_crypto_aes_key_set(&ctr_encr_128_ctx, m_key);
AES_ERROR_CHECK(ret_val);
memset(iv, 0, sizeof(iv));
/* Set IV for encryption context */
ret_val = nrf_crypto_aes_iv_set(&ctr_encr_128_ctx, iv);
AES_ERROR_CHECK(ret_val);
len_in = strlen(m_plain_text); //size of sensor value is 1~3 byte?
#define PARTIAL_MESSAGE_SIZE (16u) // 16 bytes
/* Encrypt first 10 bytes */
ret_val = nrf_crypto_aes_update(&ctr_encr_128_ctx,
(uint8_t *)m_plain_text,
PARTIAL_MESSAGE_SIZE, // encrypt first 10 bytes
(uint8_t *)m_encrypted_text);
AES_ERROR_CHECK(ret_val);
size_t offset = PARTIAL_MESSAGE_SIZE;
len_out = sizeof(m_encrypted_text) - PARTIAL_MESSAGE_SIZE;
/* Encrypt first rest of text */
ret_val = nrf_crypto_aes_finalize(&ctr_encr_128_ctx,
(uint8_t *)m_plain_text + offset, // skip already encrypted bytes
len_in - offset,
(uint8_t *)m_encrypted_text + offset,
&len_out);
AES_ERROR_CHECK(ret_val);
encrypted_text_print(m_encrypted_text, PARTIAL_MESSAGE_SIZE + len_out);
memset(iv, 0, sizeof(iv));
len_in = len_out + offset; // length of encrypted message is an input for decryption
len_out = sizeof(m_decrypted_text);
/* Decrypt with integrated function */
ret_val = nrf_crypto_aes_crypt(&ctr_decr_128_ctx,
&g_nrf_crypto_aes_ctr_128_info,
NRF_CRYPTO_DECRYPT,
m_key,
iv,
(uint8_t *)m_encrypted_text,
len_in,
(uint8_t *)m_decrypted_text,
&len_out);
AES_ERROR_CHECK(ret_val);
decrypted_text_print(m_decrypted_text, len_out);
if (memcmp(m_plain_text, m_decrypted_text, len_out) == 0)
{
//NRF_LOG_RAW_INFO("AES CTR example executed successfully.\r\n");
}
else
{
NRF_LOG_RAW_INFO("AES CTR example failed!!!\r\n");
NRF_LOG_FLUSH();
}
}
//=====================================================================================
//saadc
#define SAMPLES_IN_BUFFER 5
#define ADC_Time 100 //700
volatile uint8_t state = 1;
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(2); //0
static nrf_saadc_value_t m_buffer_pool[2][SAMPLES_IN_BUFFER];
static nrf_ppi_channel_t m_ppi_channel;
static uint32_t m_adc_evt_counter;
void timer_handler(nrf_timer_event_t event_type, void * p_context)
{
}
void saadc_sampling_event_init(void)
{
ret_code_t err_code;
err_code = nrf_drv_ppi_init();
APP_ERROR_CHECK(err_code);
nrf_drv_timer_config_t timer_cfg = NRF_DRV_TIMER_DEFAULT_CONFIG;
timer_cfg.bit_width = NRF_TIMER_BIT_WIDTH_32;
err_code = nrf_drv_timer_init(&m_timer, &timer_cfg, timer_handler);
APP_ERROR_CHECK(err_code);
/* setup m_timer for compare event every (ADC_Time)ms */
uint32_t ticks = nrf_drv_timer_ms_to_ticks(&m_timer, ADC_Time); //output time
nrf_drv_timer_extended_compare(&m_timer,
NRF_TIMER_CC_CHANNEL0,
ticks,
NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK,
false);
nrf_drv_timer_enable(&m_timer);
uint32_t timer_compare_event_addr = nrf_drv_timer_compare_event_address_get(&m_timer,
NRF_TIMER_CC_CHANNEL0);
uint32_t saadc_sample_task_addr = nrf_drv_saadc_sample_task_get();
/* setup ppi channel so that timer compare event is triggering sample task in SAADC */
err_code = nrf_drv_ppi_channel_alloc(&m_ppi_channel);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_ppi_channel_assign(m_ppi_channel,
timer_compare_event_addr,
saadc_sample_task_addr);
APP_ERROR_CHECK(err_code);
}
void saadc_sampling_event_enable(void)
{
ret_code_t err_code = nrf_drv_ppi_channel_enable(m_ppi_channel);
APP_ERROR_CHECK(err_code);
}
void saadc_callback(nrf_drv_saadc_evt_t const * p_event)
{
int sum = 0;
int value = 0;
ret_code_t err_code;
if (p_event->type == NRF_DRV_SAADC_EVT_DONE)
{
err_code = nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
//NRF_LOG_INFO("ADC event number: %d", (int)m_adc_evt_counter);
for (int i = 0; i < SAMPLES_IN_BUFFER; i++)
{
value = p_event->data.done.p_buffer[i];
sum = sum + value;
}
new_adc_value = sum / SAMPLES_IN_BUFFER;
//m_adc_evt_counter++;
}
}
void saadc_init(void)
{
ret_code_t err_code;
nrf_saadc_channel_config_t channel_config =
NRF_DRV_SAADC_DEFAULT_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN1); //9(p0.03)
//add option
//adc input range = reperence / gain (REFERENCE_VDD4 / GAIN1_4 = VDD)
channel_config.gain = NRF_SAADC_GAIN1_4; //volt gain change (ADC range, Gain factor 1/4)
channel_config.reference = NRF_SAADC_REFERENCE_VDD4; //VDD/4 as reference
err_code = nrf_drv_saadc_init(NULL, saadc_callback);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_channel_init(0, &channel_config);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[0], SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
err_code = nrf_drv_saadc_buffer_convert(m_buffer_pool[1], SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
}
void saadc_all_init()
{
saadc_init();
saadc_sampling_event_init();
saadc_sampling_event_enable();
}
//=====================================================================================
//st7735
// Some ready-made 16-bit ('565') color settings:
#define GRAY 0xC618
#define RED 0xF800
#define BLUE 0x001F
#define BLACK 0x0000
#define WHITE 0xFFFF
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define ORANGE 0xFC00
//static const char * test_text = "nRF52 family"; //test
extern const nrf_gfx_font_desc_t orkney_8ptFontInfo; //font
extern const nrf_gfx_font_desc_t orkney_24ptFontInfo; //font
extern const nrf_lcd_t nrf_lcd_st7735;
static const nrf_gfx_font_desc_t * text_font = &orkney_8ptFontInfo;
static const nrf_gfx_font_desc_t * title_font = &orkney_24ptFontInfo;
static const nrf_lcd_t * p_lcd = &nrf_lcd_st7735;
static void gfx_initialization(void)
{
APP_ERROR_CHECK(nrf_gfx_init(p_lcd));
}
char display_sensor[20];
static void display_sensor_print(void)
{
sprintf(display_sensor, "%d", new_adc_value);
//nrf_gfx_point_t text_position = NRF_GFX_POINT(5, nrf_gfx_height_get(p_lcd) - 50);
nrf_gfx_point_t text_position = NRF_GFX_POINT(50,80); //position
APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_position, ORANGE, display_sensor, text_font, true)); //instance, position, color, string, pont, wrap
}
static void display_title_print(void)
{
nrf_gfx_point_t text_position = NRF_GFX_POINT(20,20); //position
APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_position, CYAN, "Title", title_font, true));
}
static void screen_clear(void)
{
nrf_gfx_screen_fill(p_lcd, WHITE);
}
static void rect_draw(void) //sensor value clear
{
nrf_gfx_rect_t rect_size = NRF_GFX_RECT(45,75,33,30); //x,y,width,height
APP_ERROR_CHECK(nrf_gfx_rect_draw(p_lcd, &rect_size, 1, WHITE, true)); //instance, position, Thickness of the border, color, fill(bool)
}
//=====================================================================================
/**@brief Application main function.
*/
int main(void)
{
bool erase_bonds;
uint32_t err_code;
// Initialize.
uart_init();
log_init();
timers_init();
power_management_init();
ble_stack_init();
gap_params_init();
gatt_init();
services_init();
advertising_init();
conn_params_init();
// Start execution.
printf("\r\nUART started.\r\n");
NRF_LOG_INFO("Debug logging for UART over RTT started.");
advertising_start();
//crypto
nrf_drv_clock_lfclk_request(NULL);
err_code = nrf_crypto_init();
APP_ERROR_CHECK(err_code);
err_code = nrf_mem_init();
APP_ERROR_CHECK(err_code);
//saadc
saadc_all_init();
//st7735
gfx_initialization();
screen_clear();
display_title_print();
//test
//char app_test[100];
//int test_value = 5;
// Enter main loop.
for (;;)
{
idle_state_handle();
//display_title_print();
if(new_adc_value > 0) // || new_adc_value == 0
{
if(new_adc_value != prev_adc_value) //Compare to previous values
{
if(new_adc_value > prev_adc_value+5 || new_adc_value < prev_adc_value-5)
{
prev_adc_value = new_adc_value;
//display
//screen_clear();
rect_draw(); //instead of clear
display_sensor_print();
sprintf(m_plain_text, "%d ", new_adc_value); //error : The length of the one or more output arguments was too small (longer than 16byte)
crypt_ctr();
new_adc_value = 0;
}
}
}
else
{
//screen_clear();
//nrf_gfx_point_t text_position = NRF_GFX_POINT(50,80); //position
//APP_ERROR_CHECK(nrf_gfx_print(p_lcd, &text_position, ORANGE, "0", text_font, true));
}
}
}
/**
* @}
*/
May I know about this problem?
Thank you.
Thank you.
