Diff: hw/nrf51822.cpp

Revision:

0:ace2e8d3ce79

Child:

1:fd3ec64b2345

diff -r 000000000000 -r ace2e8d3ce79 hw/nrf51822.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hw/nrf51822.cpp	Fri Nov 29 14:42:22 2013 +0000
@@ -0,0 +1,212 @@
+#include "nrf51822.h"
+#include "mbed.h"
+
+/**************************************************************************/
+/*!
+    @brief  UART callback function
+*/
+/**************************************************************************/
+void nRF51822::uartCallback(void)
+{
+    /* ToDo: Check responses and set a flag for success/error/etc. */
+    
+    /* Read serial to clear the RX interrupt */
+    uart.getc();
+}
+
+/**************************************************************************/
+/*!
+    @brief  Constructor
+    
+    @args   fptr[in]    Pointer to the callback function when any radio
+                        event is raised by the radio HW.
+*/
+/**************************************************************************/
+nRF51822::nRF51822() : uart(P0_4, P0_0)
+{
+    /* Setup the nRF UART interface */
+    uart.baud(9600);
+ 
+    /* Echo data on the debug CDC port */
+    uart.attach(this, &nRF51822::uartCallback);
+    
+    /* Add flow control for UART (required by the nRF51822) */
+    uart.set_flow_control(Serial::RTSCTS, P0_6, P0_8);
+    
+    /* Reset the service counter */
+    serviceCount = 0;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Destructor
+*/
+/**************************************************************************/
+nRF51822::~nRF51822(void)
+{
+}
+
+/**************************************************************************/
+/*!
+
+*/
+/**************************************************************************/
+ble_error_t nRF51822::attach(void (*fptr)(void))
+{
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+
+*/
+/**************************************************************************/
+ble_error_t nRF51822::addService(BLEService & service)
+{
+    /* ToDo: Make sure we don't overflow the array, etc. */
+    /* ToDo: Make sure this service UUID doesn't already exist (?) */
+    /* ToDo: Basic validation */
+    
+    /* Add the service to the nRF51 */
+    if (service.primaryServiceID.type == UUID::UUID_TYPE_SHORT)
+    {
+        /* 16-bit BLE UUID */
+        uart.printf("10 01 00 04 01 02 %02X %02X\r\n",
+                    service.primaryServiceID.value & 0xFF,
+                    service.primaryServiceID.value >> 8);
+    }
+    else
+    {
+        /* 128-bit Custom UUID */
+        uart.printf("10 01 00 12 01 10 %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\r\n",
+            service.primaryServiceID.base[0], 
+            service.primaryServiceID.base[1], 
+            service.primaryServiceID.base[2], 
+            service.primaryServiceID.base[3], 
+            service.primaryServiceID.base[4], 
+            service.primaryServiceID.base[5], 
+            service.primaryServiceID.base[6], 
+            service.primaryServiceID.base[7], 
+            service.primaryServiceID.base[8], 
+            service.primaryServiceID.base[9], 
+            service.primaryServiceID.base[10], 
+            service.primaryServiceID.base[11], 
+            service.primaryServiceID.base[12], 
+            service.primaryServiceID.base[13], 
+            service.primaryServiceID.base[14], 
+            service.primaryServiceID.base[15]);
+    }
+    
+    /* ToDo: Check response */
+    wait(0.1);
+    
+    /* Add characteristics to the service */
+    for (uint8_t i = 0; i < service.characteristicCount; i++)
+    {
+        /* Command ID = 0x0002 */
+        uart.printf("10 02 00 0F 01 02 %02X %02X 04 02 %02X %02X 05 02 %02X %02X 03 01 %02X\r\n",
+                    service.characteristics[i].id & 0xFF, 
+                    service.characteristics[i].id >> 8,
+                    service.characteristics[i].lenMin & 0xFF,
+                    service.characteristics[i].lenMin >> 8,
+                    service.characteristics[i].lenMax & 0xFF,
+                    service.characteristics[i].lenMax >> 8,
+                    service.characteristics[i].properties);
+                    
+        /* ToDo: Check response */
+        wait(0.1);
+    }    
+
+    /* Update the service index value */
+    service.index = serviceCount;
+    serviceCount++;
+    
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Updates the value of a characteristic, based on the service
+            and characteristic index fields
+            
+    @param[in]  sIndex  
+                The BLEService's index value (.index)
+    @param[in]  cIndex
+                The BLECharacteristic's index value (.index)
+    @param[in]  buffer
+                Data to use when updating the characteristic's value
+                (raw byte array in LSB format)
+    @param[in]  len
+                The number of bytes in buffer
+*/
+/**************************************************************************/
+ble_error_t nRF51822::updateValue(uint8_t sIndex, uint8_t cIndex, uint8_t buffer[], uint16_t len)
+{
+    /* Command ID = 0x0006, Payload = Service ID, Characteristic ID, Value */
+    uart.printf("10 06 00 %02X %02X %02X", len + 2, cIndex, sIndex);
+    for (uint16_t i = 0; i<len; i++)
+    {
+        uart.printf(" %02X", buffer[i]);
+    }
+    uart.printf("\r\n");
+
+    /* ToDo: Check response */
+    wait(0.1);
+    
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Starts the BLE HW, initialising any services that were
+            added before this function was called.
+            
+    @note   All services must be added before calling this function!
+*/
+/**************************************************************************/
+ble_error_t nRF51822::start(void)
+{
+    /* Command ID = 0x0003, No payload */
+    uart.printf("10 03 00 00\r\n");
+
+    /* ToDo: Check response */
+    wait(0.5);
+
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Stops the BLE HW and disconnects from any devices
+*/
+/**************************************************************************/
+ble_error_t nRF51822::stop(void)
+{
+    /* Command ID = 0x0004, No payload */
+    uart.printf("10 04 00 00\r\n");
+
+    /* ToDo: Check response */
+    wait(0.1);
+
+    return BLE_ERROR_NONE;
+}
+
+/**************************************************************************/
+/*!
+    @brief  Resets the BLE HW, removing any existing services and
+            characteristics
+*/
+/**************************************************************************/
+ble_error_t nRF51822::reset(void)
+{
+    /* Command ID = 0x0005, No payload */
+    uart.printf("10 05 00 00\r\n");
+
+    /* Reset the service counter */
+    serviceCount = 0;
+
+    /* Wait for the radio to come back up */    
+    wait(1);
+    
+    return BLE_ERROR_NONE;
+}