f91f73ede2
The nrf51822 chip is still widely available, for example in the BBC micro:bit. Therefore it's a good idea to support it too. Unfortunately, Nordic decided to change the API in some significant ways so many parts are not compatible between S110 for nrf51 and the other nrf52* SoftDevices.
104 lines
3.2 KiB
Go
104 lines
3.2 KiB
Go
// +build softdevice,s110v8
|
|
|
|
package bluetooth
|
|
|
|
/*
|
|
// Define SoftDevice functions as regular function declarations (not inline
|
|
// static functions).
|
|
#define SVCALL_AS_NORMAL_FUNCTION
|
|
|
|
#include "nrf_sdm.h"
|
|
#include "ble.h"
|
|
#include "ble_gap.h"
|
|
|
|
void assertHandler(void);
|
|
*/
|
|
import "C"
|
|
|
|
import "unsafe"
|
|
|
|
//export assertHandler
|
|
func assertHandler(pc uint32, line_number uint16, p_file_name *byte) {
|
|
println("SoftDevice assert")
|
|
}
|
|
|
|
func (a *Adapter) enable() error {
|
|
// Enable the SoftDevice.
|
|
errCode := C.sd_softdevice_enable(C.NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION, C.softdevice_assertion_handler_t(C.assertHandler))
|
|
if errCode != 0 {
|
|
return Error(errCode)
|
|
}
|
|
|
|
// Enable the BLE stack.
|
|
enableParams := C.ble_enable_params_t{
|
|
gatts_enable_params: C.ble_gatts_enable_params_t{
|
|
attr_tab_size: C.BLE_GATTS_ATTR_TAB_SIZE_DEFAULT,
|
|
},
|
|
}
|
|
errCode = C.sd_ble_enable(&enableParams)
|
|
return makeError(errCode)
|
|
}
|
|
|
|
func handleEvent() {
|
|
id := eventBuf.header.evt_id
|
|
switch {
|
|
case id >= C.BLE_GAP_EVT_BASE && id <= C.BLE_GAP_EVT_LAST:
|
|
gapEvent := eventBuf.evt.unionfield_gap_evt()
|
|
switch id {
|
|
case C.BLE_GAP_EVT_CONNECTED:
|
|
handler := defaultAdapter.handler
|
|
if handler != nil {
|
|
handler(&ConnectEvent{GAPEvent: GAPEvent{Connection(gapEvent.conn_handle)}})
|
|
}
|
|
case C.BLE_GAP_EVT_DISCONNECTED:
|
|
handler := defaultAdapter.handler
|
|
if handler != nil {
|
|
handler(&DisconnectEvent{GAPEvent: GAPEvent{Connection(gapEvent.conn_handle)}})
|
|
}
|
|
case C.BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
|
|
// Respond with the default PPCP connection parameters by passing
|
|
// nil:
|
|
// > If NULL is provided on a peripheral role, the parameters in the
|
|
// > PPCP characteristic of the GAP service will be used instead. If
|
|
// > NULL is provided on a central role and in response to a
|
|
// > BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST, the peripheral request
|
|
// > will be rejected
|
|
C.sd_ble_gap_conn_param_update(gapEvent.conn_handle, nil)
|
|
default:
|
|
if debug {
|
|
println("unknown GAP event:", id)
|
|
}
|
|
}
|
|
case id >= C.BLE_GATTS_EVT_BASE && id <= C.BLE_GATTS_EVT_LAST:
|
|
gattsEvent := eventBuf.evt.unionfield_gatts_evt()
|
|
switch id {
|
|
case C.BLE_GATTS_EVT_WRITE:
|
|
writeEvent := gattsEvent.params.unionfield_write()
|
|
len := writeEvent.len - writeEvent.offset
|
|
data := (*[255]byte)(unsafe.Pointer(&writeEvent.data[0]))[:len:len]
|
|
handler := defaultAdapter.getCharWriteHandler(writeEvent.handle)
|
|
if handler != nil {
|
|
handler.callback(Connection(gattsEvent.conn_handle), int(writeEvent.offset), data)
|
|
}
|
|
case C.BLE_GATTS_EVT_SYS_ATTR_MISSING:
|
|
// This event is generated when reading the Generic Attribute
|
|
// service. It appears to be necessary for bonded devices.
|
|
// From the docs:
|
|
// > If the pointer is NULL, the system attribute info is
|
|
// > initialized, assuming that the application does not have any
|
|
// > previously saved system attribute data for this device.
|
|
// Maybe we should look at the error, but as there's not really a
|
|
// way to handle it, ignore it.
|
|
C.sd_ble_gatts_sys_attr_set(gattsEvent.conn_handle, nil, 0, 0)
|
|
default:
|
|
if debug {
|
|
println("unknown GATTS event:", id, id-C.BLE_GATTS_EVT_BASE)
|
|
}
|
|
}
|
|
default:
|
|
if debug {
|
|
println("unknown event:", id)
|
|
}
|
|
}
|
|
}
|