David Adkins
Pulsating LEDs
Dependencies: BLE_API mbed nRF51822
Fork of
BLE_BADGE
by 
David Adkins
Revision 10:fdf87f019389, committed 2017-01-16
- Comitter:
- davidadkins1
- Date:
- Mon Jan 16 18:08:54 2017 +0000
- Parent:
- 9:5f0732aa3008
- Commit message:
- Pulsating function
Changed in this revision
diff -r 5f0732aa3008 -r fdf87f019389 BLE_API.lib --- a/BLE_API.lib Tue Sep 29 12:12:10 2015 +0000 +++ b/BLE_API.lib Mon Jan 16 18:08:54 2017 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#d494ad3e87bd +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#65474dc93927
diff -r 5f0732aa3008 -r fdf87f019389 main.cpp
--- a/main.cpp Tue Sep 29 12:12:10 2015 +0000
+++ b/main.cpp Mon Jan 16 18:08:54 2017 +0000
@@ -20,8 +20,39 @@
#include "UARTService.h"
-#define NEED_CONSOLE_OUTPUT 1 /* Set this if you need debug messages on the console;
+#define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
* it will have an impact on code-size and power consumption. */
+
+#define TXRX_BUF_LEN 20
+
+// sinetable is loaded with a progressive tick time
+// designed to continuesly vary the PWM period
+// for a 5 secound time frame.
+extern float sinetable[256];
+
+// LED defines and variables
+#define GREEN_LED_PIN P0_7
+#define RED_LED_PIN P0_3
+
+#define LED_ON 0x00
+#define LED_OFF 0x01
+#define MAX_LED_LEVEL 0x0A
+
+// Command set
+#define CMD_GREEN 0x01
+#define CMD_RED 0x02
+#define CMD_OFF 0x03
+
+#define TICK_FRAME 0.02
+
+DigitalOut LED_SET_GREEN(GREEN_LED_PIN);
+DigitalOut LED_SET_RED(RED_LED_PIN);
+Ticker led_pwm_tick; // for LED PWM
+
+uint8_t next_angle = 0; // Counter for 5 secound pulsating
+float next_tick; // Current PWM pulse width
+uint8_t led_brightness = 0; // Used to scale the PWM period
+ // 0 is off, 10 is always on
#if NEED_CONSOLE_OUTPUT
#define DEBUG(STR) { if (uart) uart->write(STR, strlen(STR)); }
@@ -30,31 +61,156 @@
#endif /* #if NEED_CONSOLE_OUTPUT */
BLEDevice ble;
-DigitalOut led1(LED1);
UARTService *uart;
+uint8_t txPayload[TXRX_BUF_LEN] = {0,};
+//static const uint8_t uart_tx_uuid[] = {0x71, 0x3D, 0, 3, 0x50, 0x3E, 0x4C, 0x75, 0xBA, 0x94, 0x31, 0x48, 0xF1, 0x8D, 0x94, 0x1E};
+
+//GattCharacteristic txCharacteristic (uart_tx_uuid, txPayload, 1, TXRX_BUF_LEN, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE_WITHOUT_RESPONSE);
+
+// Local prototypes
+void green_pwm_tick_off(void);
+void green_pwm_tick_on(void);
+void red_pwm_tick_off(void);
+void red_pwm_tick_on(void);
+void pwm_tick_min(void);
+
void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
{
- DEBUG("Disconnected!\n\r");
- DEBUG("Restarting the advertising process\n\r");
+ //DEBUG("Disconnected!\n\r");
+ //DEBUG("Restarting the advertising process\n\r");
ble.startAdvertising();
}
-void periodicCallback(void)
+void WrittenHandler(const GattWriteCallbackParams *Handler)
+{
+ uint8_t buf[TXRX_BUF_LEN];
+ //uint16_t bytesRead;
+ //uint16_t index;
+ //if (Handler->handle == txCharacteristic.getValueAttribute().getHandle())
+ {
+ //ble.readCharacteristicValue(txCharacteristic.getValueAttribute().getHandle(), buf, &bytesRead);
+ //memset(txPayload, 0, TXRX_BUF_LEN);
+ //memcpy(txPayload, buf, TXRX_BUF_LEN);
+ buf[0] = uart->_getc();
+
+
+ if(CMD_GREEN == buf[0])
+ {
+ led_brightness = uart->_getc();
+
+ if(led_brightness > MAX_LED_LEVEL)
+ {
+ led_brightness = MAX_LED_LEVEL;
+ }
+
+ if(MAX_LED_LEVEL == led_brightness)
+ {
+ LED_SET_GREEN = LED_ON;
+ led_pwm_tick.attach(pwm_tick_min, 5.0);
+ }
+ else if(0 == led_brightness)
+ {
+ LED_SET_GREEN = LED_OFF;
+ led_pwm_tick.attach(pwm_tick_min, 5.0);
+ }
+ else
+ {
+ led_pwm_tick.attach(green_pwm_tick_on, .001);
+ next_angle = 0;
+ }
+
+ LED_SET_RED = LED_OFF;
+ }
+ else if(CMD_RED == buf[0])
+ {
+ led_brightness = uart->_getc();
+
+ if(led_brightness > MAX_LED_LEVEL)
+ {
+ led_brightness = MAX_LED_LEVEL;
+ }
+
+ if(MAX_LED_LEVEL == led_brightness)
+ {
+ LED_SET_RED = LED_ON;
+ led_pwm_tick.attach(pwm_tick_min, 5.0);
+ }
+ else if(0 == led_brightness)
+ {
+ LED_SET_RED = LED_OFF;
+ led_pwm_tick.attach(pwm_tick_min, 5.0);
+ }
+ else
+ {
+ LED_SET_RED = LED_ON;
+ led_pwm_tick.attach(red_pwm_tick_on, .001);
+ }
+
+ LED_SET_GREEN = LED_OFF;
+ }
+ else if(CMD_OFF == buf[0])
+ {
+ LED_SET_GREEN = LED_OFF;
+ LED_SET_RED = LED_OFF;
+ led_pwm_tick.attach(pwm_tick_min, 5.0);
+ }
+ }
+}
+
+void pwm_tick_min()
{
- led1 = !led1;
- DEBUG("ping\r\n");
+ // do nothing in this tick while LED's are off
+ // 5 second tick to allow processor max sleep time
+}
+
+void green_pwm_tick_on(void)
+{
+ next_tick = sinetable[next_angle] * ((float)led_brightness / (MAX_LED_LEVEL - 1));
+
+ LED_SET_GREEN = LED_ON;
+ led_pwm_tick.attach(green_pwm_tick_off, next_tick);
+}
+
+void green_pwm_tick_off()
+{
+ next_tick = TICK_FRAME - next_tick;
+
+ LED_SET_GREEN = LED_OFF;
+ led_pwm_tick.attach(green_pwm_tick_on, next_tick);
+
+ ++next_angle;
+}
+
+void red_pwm_tick_on(void)
+{
+ next_tick = sinetable[next_angle] * ((float)led_brightness / (MAX_LED_LEVEL - 1));
+
+ LED_SET_RED = LED_ON;
+ led_pwm_tick.attach(red_pwm_tick_off, next_tick);
+}
+
+void red_pwm_tick_off()
+{
+ next_tick = TICK_FRAME - next_tick;
+
+ LED_SET_RED = LED_OFF;
+ led_pwm_tick.attach(red_pwm_tick_on, next_tick);
+
+ ++next_angle;
}
int main(void)
{
- led1 = 1;
- Ticker ticker;
- ticker.attach(periodicCallback, 1);
-
- DEBUG("Initialising the nRF51822\n\r");
+ LED_SET_GREEN = LED_OFF;
+ LED_SET_RED = LED_OFF;
+
ble.init();
ble.onDisconnection(disconnectionCallback);
+ ble.onDataWritten(WrittenHandler);
+
+ //led_brightness = 5;
+ led_pwm_tick.attach(pwm_tick_min, 5.0); //
uart = new UARTService(ble);
@@ -62,14 +218,17 @@
ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
- (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1);
+ (const uint8_t *)"Smart Badge", sizeof("Smart Badge") - 1);
ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
- (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
+ (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
- ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
- ble.startAdvertising();
+ ble.gap().setAdvertisingInterval(2000); /* in multiples of 1 ms. */
+ ble.gap().setTxPower(-40);
- while (true) {
+ ble.gap().startAdvertising();
+
+ while (true)
+ {
ble.waitForEvent();
}
}
diff -r 5f0732aa3008 -r fdf87f019389 mbed.bld --- a/mbed.bld Tue Sep 29 12:12:10 2015 +0000 +++ b/mbed.bld Mon Jan 16 18:08:54 2017 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/4f6c30876dfa \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/99b5ccf27215 \ No newline at end of file
diff -r 5f0732aa3008 -r fdf87f019389 nRF51822.lib --- a/nRF51822.lib Tue Sep 29 12:12:10 2015 +0000 +++ b/nRF51822.lib Mon Jan 16 18:08:54 2017 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#088f5738bf18 +http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#c90ae1400bf2
diff -r 5f0732aa3008 -r fdf87f019389 sinetable.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sinetable.c Mon Jan 16 18:08:54 2017 +0000
@@ -0,0 +1,260 @@
+const float sinetable[256] =
+{
+ 0.0100000,
+ 0.0102454,
+ 0.0104907,
+ 0.0107356,
+ 0.0109802,
+ 0.0112241,
+ 0.0114673,
+ 0.0117096,
+ 0.0119509,
+ 0.0121910,
+ 0.0124298,
+ 0.0126671,
+ 0.0129028,
+ 0.0131368,
+ 0.0133689,
+ 0.0135990,
+ 0.0138268,
+ 0.0140524,
+ 0.0142756,
+ 0.0144961,
+ 0.0147140,
+ 0.0149290,
+ 0.0151410,
+ 0.0153500,
+ 0.0155557,
+ 0.0157581,
+ 0.0159570,
+ 0.0161523,
+ 0.0163439,
+ 0.0165317,
+ 0.0167156,
+ 0.0168954,
+ 0.0170711,
+ 0.0172425,
+ 0.0174095,
+ 0.0175721,
+ 0.0177301,
+ 0.0178835,
+ 0.0180321,
+ 0.0181758,
+ 0.0183147,
+ 0.0184485,
+ 0.0185773,
+ 0.0187009,
+ 0.0188192,
+ 0.0189322,
+ 0.0190399,
+ 0.0191421,
+ 0.0192388,
+ 0.0193299,
+ 0.0194154,
+ 0.0194953,
+ 0.0195694,
+ 0.0196378,
+ 0.0197003,
+ 0.0197570,
+ 0.0198079,
+ 0.0198528,
+ 0.0198918,
+ 0.0199248,
+ 0.0199518,
+ 0.0199729,
+ 0.0199880,
+ 0.0199970,
+ 0.0200000,
+ 0.0199970,
+ 0.0199880,
+ 0.0199729,
+ 0.0199518,
+ 0.0199248,
+ 0.0198918,
+ 0.0198528,
+ 0.0198079,
+ 0.0197570,
+ 0.0197003,
+ 0.0196378,
+ 0.0195694,
+ 0.0194953,
+ 0.0194154,
+ 0.0193299,
+ 0.0192388,
+ 0.0191421,
+ 0.0190399,
+ 0.0189322,
+ 0.0188192,
+ 0.0187009,
+ 0.0185773,
+ 0.0184485,
+ 0.0183147,
+ 0.0181758,
+ 0.0180321,
+ 0.0178835,
+ 0.0177301,
+ 0.0175721,
+ 0.0174095,
+ 0.0172425,
+ 0.0170711,
+ 0.0168954,
+ 0.0167156,
+ 0.0165317,
+ 0.0163439,
+ 0.0161523,
+ 0.0159570,
+ 0.0157581,
+ 0.0155557,
+ 0.0153500,
+ 0.0151410,
+ 0.0149290,
+ 0.0147140,
+ 0.0144961,
+ 0.0142756,
+ 0.0140524,
+ 0.0138268,
+ 0.0135990,
+ 0.0133689,
+ 0.0131368,
+ 0.0129028,
+ 0.0126671,
+ 0.0124298,
+ 0.0121910,
+ 0.0119509,
+ 0.0117096,
+ 0.0114673,
+ 0.0112241,
+ 0.0109802,
+ 0.0107356,
+ 0.0104907,
+ 0.0102454,
+ 0.0100000,
+ 0.0097546,
+ 0.0095093,
+ 0.0092644,
+ 0.0090198,
+ 0.0087759,
+ 0.0085327,
+ 0.0082904,
+ 0.0080491,
+ 0.0078090,
+ 0.0075702,
+ 0.0073329,
+ 0.0070972,
+ 0.0068632,
+ 0.0066311,
+ 0.0064010,
+ 0.0061732,
+ 0.0059476,
+ 0.0057244,
+ 0.0055039,
+ 0.0052860,
+ 0.0050710,
+ 0.0048590,
+ 0.0046500,
+ 0.0044443,
+ 0.0042419,
+ 0.0040430,
+ 0.0038477,
+ 0.0036561,
+ 0.0034683,
+ 0.0032844,
+ 0.0031046,
+ 0.0029289,
+ 0.0027575,
+ 0.0025905,
+ 0.0024279,
+ 0.0022699,
+ 0.0021165,
+ 0.0019679,
+ 0.0018242,
+ 0.0016853,
+ 0.0015515,
+ 0.0014227,
+ 0.0012991,
+ 0.0011808,
+ 0.0010678,
+ 0.0009601,
+ 0.0008579,
+ 0.0007612,
+ 0.0006701,
+ 0.0005846,
+ 0.0005047,
+ 0.0004306,
+ 0.0003622,
+ 0.0002997,
+ 0.0002430,
+ 0.0001921,
+ 0.0001472,
+ 0.0001082,
+ 0.0000752,
+ 0.0000482,
+ 0.0000271,
+ 0.0000120,
+ 0.0000030,
+ 0.0000000,
+ 0.0000030,
+ 0.0000120,
+ 0.0000271,
+ 0.0000482,
+ 0.0000752,
+ 0.0001082,
+ 0.0001472,
+ 0.0001921,
+ 0.0002430,
+ 0.0002997,
+ 0.0003622,
+ 0.0004306,
+ 0.0005047,
+ 0.0005846,
+ 0.0006701,
+ 0.0007612,
+ 0.0008579,
+ 0.0009601,
+ 0.0010678,
+ 0.0011808,
+ 0.0012991,
+ 0.0014227,
+ 0.0015515,
+ 0.0016853,
+ 0.0018242,
+ 0.0019679,
+ 0.0021165,
+ 0.0022699,
+ 0.0024279,
+ 0.0025905,
+ 0.0027575,
+ 0.0029289,
+ 0.0031046,
+ 0.0032844,
+ 0.0034683,
+ 0.0036561,
+ 0.0038477,
+ 0.0040430,
+ 0.0042419,
+ 0.0044443,
+ 0.0046500,
+ 0.0048590,
+ 0.0050710,
+ 0.0052860,
+ 0.0055039,
+ 0.0057244,
+ 0.0059476,
+ 0.0061732,
+ 0.0064010,
+ 0.0066311,
+ 0.0068632,
+ 0.0070972,
+ 0.0073329,
+ 0.0075702,
+ 0.0078090,
+ 0.0080491,
+ 0.0082904,
+ 0.0085327,
+ 0.0087759,
+ 0.0090198,
+ 0.0092644,
+ 0.0095093,
+ 0.0097546,
+};
+