I'm using the TWI_MNGR to schedule a transfer. I have copied the nrf_twi_mngr_perform() function to a function called nrf_twi_mngr_schedule() which does everything except waiting for the transaction to complete. I changed internal_transaction to a static variable so that the schedule transaction still has access to it after my modified perform() function returns. Please look at these functions:
ble_tonepen.c
void tonepen_char_on_write()
nrf_twi_mngr_sched_nowait() ***this is modified version of perform()
The program crashes on nrf_queue_is_full() so I believe the problem is that the queue is full or possibly not initialized properly. I don't see any define in sdk_config about the queue size. I have...
NRF_QUEUE_ENABLED 1
#include "tmd3702.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "app_util_platform.h"
#include "nrf_twi_mngr.h"
#include "nrf_assert.h"
#include <stdint.h>
typedef volatile struct
{
bool transaction_in_progress;
uint8_t transaction_result;
} nrf_twi_mngr_cb_data_t;
static void internal_transaction_cb(ret_code_t result, void * p_user_data)
{
}
void nrf_twi_mngr_sched_nowait(nrf_twi_mngr_t const * p_nrf_twi_mngr,
nrf_drv_twi_config_t const * p_config,
nrf_twi_mngr_transfer_t const * p_transfers,
uint8_t number_of_transfers,
void (* user_function)(void))
{
ASSERT(p_nrf_twi_mngr != NULL);
ASSERT(p_transfers != NULL);
ASSERT(number_of_transfers != 0);
// TODO: should this static struct be declared outsite of this function because the TWI doesn't perform at once.
static nrf_twi_mngr_transaction_t internal_transaction =
{
.callback = internal_transaction_cb,
.p_user_data = NULL,
.p_transfers = NULL,
.number_of_transfers = 0,
.p_required_twi_cfg = NULL
};
internal_transaction.p_transfers = p_transfers;
internal_transaction.number_of_transfers = number_of_transfers;
internal_transaction.p_required_twi_cfg = p_config;
ret_code_t result = nrf_twi_mngr_schedule(p_nrf_twi_mngr, &internal_transaction);
VERIFY_SUCCESS(result);
}
int tmd3702_init(nrf_twi_mngr_t *twi) {
/* reset TMD3702 */
uint8_t x = 1;
tmd3702_write_reg(twi, TMD_SOFTRST, 1, &x);
//tmd3702_write_reg(twi, TMD_SOFTRST, x);
// enable interrupts
x = TMD_INTENAB_PIEN;//TMD_INTENAB_AIEN | TMD_INTENAB_PIEN;
tmd3702_write_reg(twi, TMD_INTENAB, 1, &x);
// enable sleep after interrupt and clear status on read of status
x = TMD_CFG3_INT_READ_CLEAR | TMD_CFG3_SAI;
tmd3702_write_reg(twi, TMD_CFG3, 1, &x);
// set the integration time to 178 ms
//x = 0x3F; // MAX RESOLUTION
//x = 0x00; // 2.78 ms
x = 0x0;
tmd3702_write_reg(twi, TMD_ATIME, 1, &x);
//x = 60;
tmd3702_sched_write_reg(twi, TMD_WTIME, x);
/* enable ALS and oscillator */
x = TMD_ENABLE_PON | TMD_ENABLE_PEN | TMD_ENABLE_AEN;
tmd3702_sched_write_reg(twi, TMD_ENABLE, x);
NRF_LOG_INFO("TMD initialized\n");
for(int i = 0; i < 30; i++) {
uint8_t tmp;
tmd3702_read_reg(twi, 0x80 + i, 1, &tmp);
NRF_LOG_INFO("TMD %hhx = %hhx", 0x80 + i, tmp);
}
return 0;
}
int tmd3702_read_reg(nrf_twi_mngr_t *twi, uint8_t addr, int n, uint8_t *data) {
nrf_twi_mngr_transfer_t const read_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &addr, 1, NRF_TWI_MNGR_NO_STOP),
NRF_TWI_MNGR_READ (0x49, data, n, 0)
};
int err = nrf_twi_mngr_perform(twi, NULL, read_tranfsers, 2, NULL);
return err;
}
int tmd3702_write_reg(nrf_twi_mngr_t *twi, uint8_t addr, int n, uint8_t *data) {
uint8_t out[30];
out[0] = addr;
for(int i = 0; i < n; i++)
out[i + 1] = data[i];
nrf_twi_mngr_transfer_t const write_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &out, n + 1, 0)
};
int err = nrf_twi_mngr_perform(twi, NULL, write_tranfsers, 1, NULL);
return err;
}
int tmd3702_write_reg_nowait(nrf_twi_mngr_t *twi, uint8_t addr, int n, uint8_t *data) {
if(n > 33)
return NRF_ERROR_INVALID_PARAM;
uint8_t out[33];
out[0] = addr;
for(int i = 0; i < n; i++)
out[i + 1] = data[i];
nrf_twi_mngr_transfer_t const write_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &out, n + 1, 0)
};
//int err = nrf_twi_mngr_perform(twi, NULL, write_tranfsers, 1, NULL);
nrf_twi_mngr_sched_nowait(twi, NULL, write_tranfsers, 1, NULL);
return NRF_SUCCESS;
}
/* schedule to read color data and to read status from TMD3702 */
int tmd3702_sched_read_sensor(nrf_twi_mngr_t *twi, nrf_twi_mngr_callback_t cb) {
static uint8_t color_addr = TMD_CDATAL;
static uint8_t status_addr = TMD_STATUS;
static nrf_twi_mngr_transfer_t const read_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &color_addr, 1, NRF_TWI_MNGR_NO_STOP),
NRF_TWI_MNGR_READ (0x49, color_data, 10, 0),
NRF_TWI_MNGR_WRITE(0x49, &status_addr, 1, NRF_TWI_MNGR_NO_STOP),
NRF_TWI_MNGR_READ (0x49, &tmd_status, 1, 0)
};
static nrf_twi_mngr_transaction_t internal_transaction =
{
.callback = NULL,
.p_user_data = color_data,
.p_transfers = read_tranfsers,
.number_of_transfers = 4,
.p_required_twi_cfg = NULL
};
internal_transaction.callback = cb;
ret_code_t result = nrf_twi_mngr_schedule(twi, &internal_transaction);
VERIFY_SUCCESS(result);
}
int tmd3702_sched_write_reg(nrf_twi_mngr_t *twi, uint8_t addr, uint8_t data) {
static uint8_t out[2];
out[0] = addr;
out[1] = data;
static nrf_twi_mngr_transfer_t const write_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &out, 2, 0)
};
static nrf_twi_mngr_transaction_t internal_transaction =
{
.callback = NULL,
.p_user_data = out,
.p_transfers = write_tranfsers,
.number_of_transfers = 1,
.p_required_twi_cfg = NULL
};
ret_code_t result = nrf_twi_mngr_schedule(twi, &internal_transaction);
VERIFY_SUCCESS(result);
}
int tmd3702_sched_read_reg(nrf_twi_mngr_t *twi, uint8_t addr, uint8_t n, nrf_twi_mngr_callback_t cb) {
static uint8_t read_addr;
static uint8_t status_addr = TMD_STATUS;
static nrf_twi_mngr_transfer_t read_tranfsers[] = {
NRF_TWI_MNGR_WRITE(0x49, &read_addr, 1, NRF_TWI_MNGR_NO_STOP),
NRF_TWI_MNGR_READ (0x49, read_data, 0, 0)
};
read_addr = addr;
read_tranfsers[1].length = n;
static nrf_twi_mngr_transaction_t internal_transaction =
{
.callback = NULL,
.p_user_data = read_data,
.p_transfers = read_tranfsers,
.number_of_transfers = 2,
.p_required_twi_cfg = NULL
};
internal_transaction.callback = cb;
ret_code_t result = nrf_twi_mngr_schedule(twi, &internal_transaction);
VERIFY_SUCCESS(result);
}
/** @file
*
* @defgroup ble_sdk_app_template_main main.c
* @{
* @ingroup ble_sdk_app_template
* @brief Template project main file.
*
* This file contains a template for creating a new application. It has the code necessary to wakeup
* from button, advertise, get a connection restart advertising on disconnect and if no new
* connection created go back to system-off mode.
* It can easily be used as a starting point for creating a new application, the comments identified
* with 'YOUR_JOB' indicates where and how you can customize.
*/
#include <stdbool.h>
#include <stdint.h>
#include <string.h>
#include "nordic_common.h"
#include "nrf.h"
#include "app_error.h"
#include "ble.h"
#include "ble_hci.h"
#include "ble_srv_common.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 "app_timer.h"
#include "fds.h"
#include "peer_manager.h"
#include "peer_manager_handler.h"
#include "bsp_btn_ble.h"
#include "sensorsim.h"
#include "ble_conn_state.h"
#include "nrf_ble_gatt.h"
#include "nrf_ble_qwr.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
/* Driver for SAADC side sensor */
#include "nrf_drv_saadc.h"
#include "nrf_drv_ppi.h"
#include "nrf_drv_timer.h"
/* Driver for TWI manager */
#include "nrf_twi_mngr.h"
#include "nrf_drv_twi.h"
#include "nrf_drv_gpiote.h"
#include "ble_tonepen.h"
/* Driver for TMD3702 color sensor */
#include "tmd3702.h"
#define DEVICE_NAME "Tonepen" /**< Name of device. Will be included in the advertising data. */
#define MANUFACTURER_NAME "Tonepen LLC" /**< Manufacturer. Will be passed to Device Information Service. */
#define APP_ADV_INTERVAL 300 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 187.5 ms). */
#define APP_ADV_DURATION 18000 /**< The advertising duration (180 seconds) in units of 10 milliseconds. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define MIN_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Minimum acceptable connection interval (0.1 seconds). */
#define MAX_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Maximum acceptable connection interval (0.2 second). */
#define SLAVE_LATENCY 0 /**< Slave latency. */
#define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds). */
#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 SEC_PARAM_BOND 1 /**< Perform bonding. */
#define SEC_PARAM_MITM 0 /**< Man In The Middle protection not required. */
#define SEC_PARAM_LESC 0 /**< LE Secure Connections not enabled. */
#define SEC_PARAM_KEYPRESS 0 /**< Keypress notifications not enabled. */
#define SEC_PARAM_IO_CAPABILITIES BLE_GAP_IO_CAPS_NONE /**< No I/O capabilities. */
#define SEC_PARAM_OOB 0 /**< Out Of Band data not available. */
#define SEC_PARAM_MIN_KEY_SIZE 7 /**< Minimum encryption key size. */
#define SEC_PARAM_MAX_KEY_SIZE 16 /**< Maximum encryption key size. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
BLE_TONEPEN_DEF(p_tonepen_service);
/* -----------------Time for SAADC instance --------------------*/
#define SAMPLES_IN_BUFFER 5
volatile uint8_t state = 1;
static const nrf_drv_timer_t m_timer = NRF_DRV_TIMER_INSTANCE(1);
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;
/* --------------TWI instance ---------------------- */
#define TWI_INSTANCE_ID 0
#define MAX_PENDING_TRANSACTIONS 10
NRF_TWI_MNGR_DEF(m_nrf_twi_mngr, MAX_PENDING_TRANSACTIONS, TWI_INSTANCE_ID);
/* ------------BLE GATT and advertisement instances -------------- */
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. */
/* YOUR_JOB: Declare all services structure your application is using
* BLE_XYZ_DEF(m_xyz);
*/
// YOUR_JOB: Use UUIDs for service(s) used in your application.
static ble_uuid_t m_adv_uuids[] = /**< Universally unique service identifiers. */
{
{BLE_UUID_DEVICE_INFORMATION_SERVICE, BLE_UUID_TYPE_BLE}
};
static void advertising_start(bool erase_bonds);
/**@brief Callback function for asserts in the SoftDevice.
*
* @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 analyze
* 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] 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 handling Peer Manager events.
*
* @param[in] p_evt Peer Manager event.
*/
static void pm_evt_handler(pm_evt_t const * p_evt)
{
pm_handler_on_pm_evt(p_evt);
pm_handler_flash_clean(p_evt);
switch (p_evt->evt_id)
{
case PM_EVT_PEERS_DELETE_SUCCEEDED:
advertising_start(false);
break;
default:
break;
}
}
/**@brief Function for the Timer initialization.
*
* @details Initializes the timer module. This creates and starts application timers.
*/
static void timers_init(void)
{
// Initialize timer module.
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
// Create timers.
/* YOUR_JOB: Create any timers to be used by the application.
Below is an example of how to create a timer.
For every new timer needed, increase the value of the macro APP_TIMER_MAX_TIMERS by
one.
ret_code_t err_code;
err_code = app_timer_create(&m_app_timer_id, APP_TIMER_MODE_REPEATED, timer_timeout_handler);
APP_ERROR_CHECK(err_code); */
}
/**@brief Function for the GAP initialization.
*
* @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the
* device including the device name, appearance, and the preferred connection parameters.
*/
static void gap_params_init(void)
{
ret_code_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);
/* YOUR_JOB: Use an appearance value matching the application's use case.
err_code = sd_ble_gap_appearance_set(BLE_APPEARANCE_);
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 initializing the GATT module.
*/
static void gatt_init(void)
{
ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL);
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 YYY Service events.
* YOUR_JOB implement a service handler function depending on the event the service you are using can generate
*
* @details This function will be called for all YY Service events which are passed to
* the application.
*
* @param[in] p_yy_service YY Service structure.
* @param[in] p_evt Event received from the YY Service.
*
*
static void on_yys_evt(ble_yy_service_t * p_yy_service,
ble_yy_service_evt_t * p_evt)
{
switch (p_evt->evt_type)
{
case BLE_YY_NAME_EVT_WRITE:
APPL_LOG("[APPL]: charact written with value %s. ", p_evt->params.char_xx.value.p_str);
break;
default:
// No implementation needed.
break;
}
}
*/
/**@brief Function for initializing services that will be used by the application.
NOTE must be executed AFTER m_nrf_twi_mngr is initialized
*/
static void services_init(void)
{
ret_code_t err_code;
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);
/* TODO do I need to zero out p_tonepen_service?? */
tonepen_service_init(&p_tonepen_service, &m_nrf_twi_mngr);
/* YOUR_JOB: Add code to initialize the services used by the application.
ble_xxs_init_t xxs_init;
ble_yys_init_t yys_init;
// Initialize XXX Service.
memset(&xxs_init, 0, sizeof(xxs_init));
xxs_init.evt_handler = NULL;
xxs_init.is_xxx_notify_supported = true;
xxs_init.ble_xx_initial_value.level = 100;
err_code = ble_bas_init(&m_xxs, &xxs_init);
APP_ERROR_CHECK(err_code);
// Initialize YYY Service.
memset(&yys_init, 0, sizeof(yys_init));
yys_init.evt_handler = on_yys_evt;
yys_init.ble_yy_initial_value.counter = 0;
err_code = ble_yy_service_init(&yys_init, &yy_init);
APP_ERROR_CHECK(err_code);
*/
}
/**@brief Function for handling 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)
{
ret_code_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 a Connection Parameters error.
*
* @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)
{
ret_code_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 starting timers.
*/
static void application_timers_start(void)
{
/* YOUR_JOB: Start your timers. below is an example of how to start a timer.
ret_code_t err_code;
err_code = app_timer_start(m_app_timer_id, TIMER_INTERVAL, NULL);
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)
{
ret_code_t err_code;
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)
{
ret_code_t err_code;
switch (ble_adv_evt)
{
case BLE_ADV_EVT_FAST:
NRF_LOG_INFO("Fast advertising.");
//err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
//APP_ERROR_CHECK(err_code);
break;
case BLE_ADV_EVT_IDLE:
sleep_mode_enter();
break;
default:
break;
}
}
/**@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)
{
ret_code_t err_code = NRF_SUCCESS;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected.");
// LED indication will be changed when advertising starts.
p_tonepen_service.conn_handle = BLE_CONN_HANDLE_INVALID;
nrf_drv_timer_disable(&m_timer);
break;
case BLE_GAP_EVT_CONNECTED:
NRF_LOG_INFO("Connected.");
p_tonepen_service.conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
//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);
nrf_drv_timer_enable(&m_timer);
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_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
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.
NRF_LOG_DEBUG("GATT Server Timeout.");
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 initializing the BLE stack.
*
* @details 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);
NRF_SDH_BLE_OBSERVER(m_tonepen_service_observer, APP_BLE_OBSERVER_PRIO, ble_tonepen_on_ble_evt, (void*) &p_tonepen_service);
}
/**@brief Function for the Peer Manager initialization.
*/
static void peer_manager_init(void)
{
ble_gap_sec_params_t sec_param;
ret_code_t err_code;
err_code = pm_init();
APP_ERROR_CHECK(err_code);
memset(&sec_param, 0, sizeof(ble_gap_sec_params_t));
// Security parameters to be used for all security procedures.
sec_param.bond = SEC_PARAM_BOND;
sec_param.mitm = SEC_PARAM_MITM;
sec_param.lesc = SEC_PARAM_LESC;
sec_param.keypress = SEC_PARAM_KEYPRESS;
sec_param.io_caps = SEC_PARAM_IO_CAPABILITIES;
sec_param.oob = SEC_PARAM_OOB;
sec_param.min_key_size = SEC_PARAM_MIN_KEY_SIZE;
sec_param.max_key_size = SEC_PARAM_MAX_KEY_SIZE;
sec_param.kdist_own.enc = 1;
sec_param.kdist_own.id = 1;
sec_param.kdist_peer.enc = 1;
sec_param.kdist_peer.id = 1;
err_code = pm_sec_params_set(&sec_param);
APP_ERROR_CHECK(err_code);
err_code = pm_register(pm_evt_handler);
APP_ERROR_CHECK(err_code);
}
/* This is executed before the SAADC callback (I think)*/
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 400ms */
uint32_t ticks = nrf_drv_timer_ms_to_ticks(&m_timer, 5);//400);
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)
{
if (p_event->type == NRF_DRV_SAADC_EVT_DONE)
{
ret_code_t err_code;
err_code = nrf_drv_saadc_buffer_convert(p_event->data.done.p_buffer, SAMPLES_IN_BUFFER);
APP_ERROR_CHECK(err_code);
int i;
NRF_LOG_INFO("ADC event number: %d", (int)m_adc_evt_counter);
for (i = 0; i < SAMPLES_IN_BUFFER; i++)
{
NRF_LOG_INFO("%d", p_event->data.done.p_buffer[i]);
}
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_AIN3);
channel_config.gain = NRF_SAADC_GAIN4;
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);
}
/**@brief Clear bond information from persistent storage.
*/
static void delete_bonds(void)
{
ret_code_t err_code;
NRF_LOG_INFO("Erase bonds!");
err_code = pm_peers_delete();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated when button is pressed.
*/
static void bsp_event_handler(bsp_event_t event)
{
ret_code_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break; // BSP_EVENT_SLEEP
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; // BSP_EVENT_DISCONNECT
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; // BSP_EVENT_KEY_0
default:
break;
}
}
/**@brief Function for initializing the Advertising functionality.
*/
static void advertising_init(void)
{
ret_code_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;
init.advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE;
init.advdata.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]);
init.advdata.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 buttons and leds.
*
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up.
*/
static void buttons_leds_init(bool * p_erase_bonds)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
/**@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(bool erase_bonds)
{
if (erase_bonds == true)
{
delete_bonds();
// Advertising is started by PM_EVT_PEERS_DELETED_SUCEEDED event
}
else
{
ret_code_t err_code = ble_advertising_start(&m_advertising, BLE_ADV_MODE_FAST);
APP_ERROR_CHECK(err_code);
}
}
// TWI (with transaction manager) initialization.
static void twi_config(void)
{
uint32_t err_code;
nrf_drv_twi_config_t const config = {
.scl = TMD3702_SCL_PIN,
.sda = TMD3702_SDA_PIN,
.frequency = NRF_DRV_TWI_FREQ_400K,
.interrupt_priority = APP_IRQ_PRIORITY_LOWEST,
.clear_bus_init = false
};
err_code = nrf_twi_mngr_init(&m_nrf_twi_mngr, &config);
APP_ERROR_CHECK(err_code);
}
void tmd3702_interrupt_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
nrf_drv_gpiote_out_toggle(TMD3702_INT);
}
/**
* @brief Function for configuring: PIN_IN pin for input, PIN_OUT pin for output,
* and configures GPIOTE to give an interrupt on pin change.
*/
static void gpio_init(void)
{
ret_code_t err_code;
err_code = nrf_drv_gpiote_init();
APP_ERROR_CHECK(err_code);
nrf_drv_gpiote_in_config_t in_config = GPIOTE_RAW_CONFIG_IN_SENSE_HITOLO(true);
err_code = nrf_drv_gpiote_in_init(TMD3702_INT, &in_config, tmd3702_interrupt_pin_handler);
APP_ERROR_CHECK(err_code);
nrf_drv_gpiote_in_event_enable(TMD3702_INT, true);
}
int main(void)
{
bool erase_bonds;
// Initialize.
log_init();
timers_init();
power_management_init();
twi_config();
ble_stack_init();
gap_params_init();
gatt_init();
advertising_init();
services_init();
conn_params_init();
peer_manager_init();
// Start execution.
NRF_LOG_INFO("Tonepen started.");
application_timers_start();
saadc_init();
saadc_sampling_event_init();
saadc_sampling_event_enable();
gpio_init();
tmd3702_init(&m_nrf_twi_mngr);
advertising_start(erase_bonds);
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
/**
* @}
*/
