sPyNNaker neural_modelling  7.4.2
timing_pfister_triplet_impl.c
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1 /*
2  * Copyright (c) 2017 The University of Manchester
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * https://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
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13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
20 
21 //---------------------------------------
22 // Globals
23 //---------------------------------------
24 // Exponential lookup-tables
33 
34 //---------------------------------------
35 // Functions
36 //---------------------------------------
37 address_t timing_initialise(address_t address) {
38  // **TODO** assert number of neurons is less than max
39 
40  // Copy LUTs from following memory
41  address_t lut_address = address;
42  tau_plus_lookup = maths_copy_int16_lut(&lut_address);
43  tau_minus_lookup = maths_copy_int16_lut(&lut_address);
44  tau_x_lookup = maths_copy_int16_lut(&lut_address);
45  tau_y_lookup = maths_copy_int16_lut(&lut_address);
46 
47  return lut_address;
48 }
static int16_lut * maths_copy_int16_lut(address_t *address)
Copy a Lookup Table from SDRAM to DTCM, updating the address.
Definition: maths.h:57
Lookup Table of 16-bit integers.
Definition: maths.h:44
int16_lut * tau_x_lookup
Lookup table for τx exponential decay.
int16_lut * tau_minus_lookup
Lookup table for τ- exponential decay.
int16_lut * tau_plus_lookup
Lookup table for τ+ exponential decay.
int16_lut * tau_y_lookup
Lookup table for τy exponential decay.
address_t timing_initialise(address_t address)
Initialise the timing dependence state (global) from SDRAM.
Timing rule using spike triplets.