Created
April 12, 2015 01:32
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Another MAG3110 test
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// Create a data stream at data.sparkfun.com, then enter your keys here: | |
local publicKey = "x" | |
local privateKey = "x" | |
data_array <- array(800,[0,0,0,0]) | |
name_array <- ["x","y","z"] | |
total <- 0 | |
local req = http.get("https://data.sparkfun.com/output/"+publicKey+"/latest.json"); | |
local response = req.sendsync() | |
local data = http.jsondecode(response.body) | |
total = data[0].cnt_total.tointeger() | |
server.log(total) | |
function bufferRx(data) { | |
data_array <- data | |
local cnt = data[1][4] | |
total += cnt | |
// Prepare the phant headers | |
local phantHeaders = {"Phant-Private-Key": privateKey, "connection": "close"}; | |
// Create a post request | |
local req = http.post("http://data.sparkfun.com/input/"+publicKey, phantHeaders,"cnt="+cnt+"&cnt_total="+total); | |
//Send out the request! | |
server.log(req.sendsync().statuscode); | |
} | |
function request_handler(request, response) | |
{ | |
// The parameter request is the incoming HTTP request | |
// The parameter response is an auto-generated HTTP response | |
try | |
{ | |
// Process incoming http request | |
response.header("access-control-allow-origin", "*"); | |
// If everything worked as expected, send a standard 'OK' status code (200) | |
local r = "{" | |
local i=0 | |
local k=0 | |
for (k=0;k<name_array.len();k++) { | |
if (k!=0) {r += ",\n"} | |
r += "\""+name_array[k]+"\":[" | |
for (i=0;i<data_array[0].len();i++) { | |
if (i!=0) {r += ","} | |
r += data_array[0][i][k] | |
} | |
r += "]" | |
} | |
r += "," | |
for (k=0;k<name_array.len();k++) { | |
r += "\""+name_array[k]+"_min\":"+data_array[k+1][0]+"," | |
r += "\""+name_array[k]+"_max\":"+data_array[k+1][1]+"," | |
r += "\""+name_array[k]+"_thresh\":"+data_array[k+1][2]+"," | |
r += "\""+name_array[k]+"_spread\":"+data_array[k+1][3]+"," | |
r += "\""+name_array[k]+"_trigs\":"+data_array[k+1][4] | |
if (k!=2) {r += ","} | |
} | |
r+="}" | |
response.send(200, r); | |
} | |
catch (exception) | |
{ | |
response.send(500, "Internal Server Error: " + exception); | |
} | |
} | |
device.on("buffer",bufferRx); | |
http.onrequest(request_handler); |
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// Define the Sensor Address | |
const ADDR = 0x1C; | |
// Define register map | |
const DR_STATUS = "\x00"; | |
const OUT_X_MSB = "\x01"; | |
const OUT_X_LSB = "\x02"; | |
const OUT_Y_MSB = "\x03"; | |
const OUT_Y_LSB = "\x04"; | |
const OUT_Z_MSB = "\x05"; | |
const OUT_Z_LSB = "\x06"; | |
const WHO_AM_I = "\x07"; | |
const SYSMOD = "\x08"; | |
const OFF_X_MSB = "\x09"; | |
const OFF_X_LSB = "\x0A"; | |
const OFF_Y_MSB = "\x0B"; | |
const OFF_Y_LSB = "\x0C"; | |
const OFF_Z_MSB = "\x0D"; | |
const OFF_Z_LSB = "\x0E"; | |
const DIE_TEMP = "\x0F"; | |
const CTRL_REG1 = "\x10"; | |
const CTRL_REG2 = "\x11"; | |
const DR_1280 = "\x00"; | |
const DR_640 = "\x20"; | |
const DR_320 = "\x40"; | |
const DR_160 = "\x50"; | |
const DR_80 = "\x80"; | |
const DR_40 = "\xA0"; | |
const DR_20 = "\xC0"; | |
const DR_10 = "\xE0"; | |
const OSR_16 = "\x00"; | |
const OSR_32 = "\x08"; | |
const OSR_64 = "\x10"; | |
const OSR_128 = "\x18"; | |
const FAST_READ = "\x04"; | |
const TRIGGER_MEAS = "\x02"; | |
const ACTIVE = "\x01"; | |
const AUTO_MRST_EN = "\x80"; | |
const RAW = "\x20"; | |
const MAG_RST = "\x10"; | |
// Specify the update rate in seconds | |
const update_rate = 5; | |
// Define the i2c periphrial being used | |
i2c <- hardware.i2c89; | |
int <- hardware.pin7; | |
x_min <- 32767 | |
x_min_cyc <- 32767 | |
y_min <- 32767 | |
z_min <- 32767 | |
x_max <- -32767 | |
x_max_cyc <- -32767 | |
y_max <- -32767 | |
z_max <- -32767 | |
x_prev <- 0 | |
x_count <- 0 | |
x_int <- 0 | |
x_int_neg <- 0 | |
x_hist <- false | |
x_dd <- false | |
x_hf <- false | |
z_dd <- false | |
debounce <- 130 | |
x_start <- 0 | |
x_trigs <- 0 | |
x_trigs_hf <- 0 | |
y_trigs <- 0 | |
z_trigs <- 0 | |
x_thresh <- 0 | |
y_thresh <- 0 | |
z_thresh <- 0 | |
x_spread <- 0 | |
y_spread <- 0 | |
z_spread <- 0 | |
calibrate <- 0; | |
buffer_size <- 800; | |
index <- 0; | |
buffer <- array(buffer_size); | |
// Configure said periphrial | |
i2c.configure(CLOCK_SPEED_400_KHZ); | |
i2c.write(ADDR,CTRL_REG2+AUTO_MRST_EN) | |
i2c.write(ADDR,CTRL_REG1+"\x01") | |
local data = i2c.read(ADDR,OUT_X_MSB,6); | |
function mag_isr() { | |
if (int.read()==1) | |
{ | |
local data = i2c.read(ADDR,OUT_X_MSB,6); | |
if (calibrate ==0) { | |
server.log("calibrate") | |
calibrate <- 1; | |
i2c.write(ADDR,OFF_X_MSB+data) | |
} | |
else | |
{ | |
local x = data[0]<<8 | data[1] | |
if (x & 0x8000) {x = -((~x & 0x7FFF) + 1);} | |
local y = data[2]<<8 | data[3] | |
if (y & 0x8000) {y = -((~y & 0x7FFF) + 1);} | |
local z = data[4]<<8 | data[5] | |
if (z & 0x8000) {z = -((~z & 0x7FFF) + 1);} | |
if (x<x_min) {x_min = x; x_spread = x_max-x_min; x_thresh = x_min+x_spread/2} | |
if (x<x_min_cyc) {x_min_cyc = x} | |
if (y<y_min) {y_min = y; y_spread = y_max-y_min; y_thresh = y_min+y_spread/2} | |
if (z<z_min) {z_min = z; z_spread = z_max-z_min; z_thresh = z_min+z_spread/2} | |
if (x>x_max) {x_max = x; x_spread = x_max-x_min; x_thresh = x_min+x_spread/2} | |
if (x>x_max_cyc) {x_max_cyc = x} | |
if (y>y_max) {y_max = y; y_spread = y_max-y_min; y_thresh = y_min+y_spread/2} | |
if (z>z_max) {z_max = z; z_spread = z_max-z_min; z_thresh = z_min+z_spread/2} | |
server.log("x: "+x+" | y:"+y+" | z:"+z) | |
if (x>x_thresh) { | |
if (!x_hf){ | |
x_hf = true | |
x_trigs_hf++ | |
} | |
x_count++ | |
x_int += (x-x_thresh) | |
if (x_int>debounce) { | |
if (!x_dd) { | |
x_trigs++ | |
x_dd=true | |
x_int_neg = 0 | |
} | |
} | |
} | |
else { | |
x_hf = false | |
x_int_neg += (x_thresh-x) | |
if (x_int_neg>debounce) { | |
x_int = 0 | |
x_dd = false | |
} | |
} | |
if (index<buffer_size) | |
{ | |
buffer[index] = [x,y,z] | |
index++ | |
} | |
else | |
{ | |
index = 0 | |
agent.send("buffer",[buffer,[x_min,x_max,x_thresh,x_trigs_hf,x_trigs],[y_min,y_max,y_thresh,x_max_cyc-x_min_cyc,y_trigs],[z_min,z_max,z_thresh,z_spread,z_trigs]]) | |
x_trigs = 0 | |
x_trigs_hf = 0 | |
x_max_cyc = -32767 | |
x_min_cyc = 32767 | |
} | |
} | |
} | |
} | |
int.configure(DIGITAL_IN, mag_isr) |
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