Hello I am new to Circuitpython
I just wanted to ask since strings are not allowed how can I send a Ascii string over Uart and the \n\r (basically ENTER over Uart):
My current code looks like this
def get_psuState(): # read the psuState data
uart.write("psuState")
bytes_psuState = uart.read(173) # Read psuState over UART
string_psuState = ''.join([chr(b) for b in bytes_psuState])
string_psuState_split = string_psuState.split() # string sepperate after space
array_psuState = []
for line in string_psuState_split:
if ':' in line:
i = int(line.split(':')[-1]) # values after ":" save in array
array_psuState.append(i)
BatFault = array_psuState[0] # array values to global Variables
Bat12Fault = array_psuState[1]
Bat24Fault = array_psuState[2]
MainsFault = array_psuState[3]
SensorFault = array_psuState[4]
SelftestFault = array_psuState[5]
InitialCharge = array_psuState[6]
LongtimeTestActive = array_psuState[7]
batteryOvercurrent = array_psuState[8]
TotalOvercurrent = array_psuState[9]
LowBattSwitchOFF = array_psuState[10]
Basically I want to send the command psuState and ENTER to get my values from the other board.
Can anyone help me?
Related
I am in the process of learning Julia and I'd like to do some buffer manipulation.
What I want to achieve is the following:
I've got a buffer that I can write to and read from at the same time, meaning that the speed with which I add a value to the Fifo buffer approximately equals the speed with which I read from the buffer. Reading and writing will happen in separate threads so it can occur simultaneously.
Additionally, I want to be able to control the values that I write into the buffer based on user input. For now, this is just a simple console prompt asking for a number, which I then want to write into the stream continously. The prompt refreshes and asks for a new number to write into the stream, but the prompt is non-blocking, meaning that in the background, the old number is written to the buffer until I enter a new number, which is then written to the buffer continuously.
This is my preliminary code for simulatenous reading and writing of the stream:
using Causal
CreateBuffer(size...) = Buffer{Fifo}(Float32, size...)
function writetobuffer(buf::Buffer, n::Float32)
while !isfull(buf)
write!(buf, fill(n, 2, 1))
end
end
function readfrombuffer(buf::Buffer)
while true
while !isempty(buf)
#show read(buf)
end
end
end
n_channels = 2
sampling_rate = 8192
duration = 2
n_frames = sampling_rate * duration
sbuffer = CreateBuffer(n_channels, n_frames)
print("Please enter a number: ")
n = parse(Float32, readline())
s1 = Threads.#spawn writetobuffer(sbuffer, n)
s2 = Threads.#spawn readfrombuffer(sbuffer)
s1 = fetch(s1)
s2 = fetch(s2)
I am not sure how to integrate the user input in a way that it keeps writing and reading the latest number the user put in. I looked at the documentation for channels, but didn't manage to get it working in a way that was non-blocking for the stream writing. I don't know that the correct approach is (channels, events, julia's multithreading) to enable this functionality.
How would I go on about to include this?
I managed to get it working, but I think it could be improved:
using Causal
CreateBuffer(size...) = Buffer{Fifo}(Float32, size...)
function writeToBuffer(buf::Buffer, n::Float32)
write!(buf, fill(n, 2, 1))
end
function readFromBuffer()
global soundbuffer
println("Starting")
sleep(0.5)
while true
while !isempty(soundbuffer)
read(soundbuffer)
end
end
println("Exiting...")
end
function askForInput()::Float32
print("Please enter a number: ")
a = parse(Float32, readline())
return(a)
end
function inputAndWrite()
global soundbuffer
old_num::Float32 = 440
new_num::Float32 = 440
while true
#async new_num = askForInput()
while (new_num == old_num)
writeToBuffer(soundbuffer, new_num)
end
old_num = new_num
println("Next iteration with number " * string(new_num))
end
end
n_channels = 2
sampling_rate = 8192
duration = 2
n_frames = sampling_rate * duration
soundbuffer = CreateBuffer(n_channels, n_frames)
s1 = Threads.#spawn inputAndWrite()
s2 = Threads.#spawn readFromBuffer()
s1 = fetch(s1)
s2 = fetch(s2)
The problem I am faced with regards to llvmlite is producing a simple hello world example.
I am unable to display the string global variable value in the function I created.
It appears to always print out the number one.
I have already tried to return the stringtype which produced a error.
from llvmlite import ir
i64 = ir.IntType(64)
i8 = ir.IntType(16)
hellostr = 'hello, world!'
stringtype = ir.ArrayType(i64, len(hellostr))
module = ir.Module( name="m_hello_example" )
hello = ir.GlobalVariable(module, stringtype, '.str4')
fn_int_to_int_type = ir.FunctionType(i64, [stringtype.as_pointer()] )
fn_hel = ir.Function( module, fn_int_to_int_type, name="fn_hel" )
fn_hel_block = fn_hel.append_basic_block( name="fn_hel_entry" )
builder = ir.IRBuilder(fn_hel_block )
# zero = builder.constant(i64, 0)
# const_1 = ir.Constant(stringtype,1);
# builder.ret(const_1)
const_1 = ir.Constant(i64,1);
# print(const_1)
builder.ret(const_1)
print( module )
I was expecting the output to print out the string 'hello, world!'.
Any help would be much appreciated.
Thanks.
It ended up that I was able to solve my problem with the following code:
import llvmlite.ir as ir
import llvmlite.binding as llvm
from ctypes import CFUNCTYPE
def main():
m = ir.Module()
func_ty = ir.FunctionType(ir.VoidType(), []) #defining printer function as type void
func = ir.Function(m, func_ty, name="printer") #define function as printer
builder = ir.IRBuilder(func.append_basic_block('entry')) #defining the entry point of the function printer
fmt = "%s\n\0" #in function printf allows for inserting arg in, next global_fmt statements allow for creating #"fstr" assignment
c_fmt = ir.Constant(ir.ArrayType(ir.IntType(8), len(fmt)),
bytearray(fmt.encode("utf8")))
global_fmt = ir.GlobalVariable(m, c_fmt.type, name="fstr")
global_fmt.linkage = 'internal'
global_fmt.global_constant = True
global_fmt.initializer = c_fmt
arg = "Hello, World!\0" #args will be passed into printf function.
c_str_val = ir.Constant(ir.ArrayType(ir.IntType(8), len(arg)),
bytearray(arg.encode("utf8"))) #creates the c_str_value as a constant
printf_ty = ir.FunctionType(ir.IntType(32), [], var_arg=True) #creation of the printf function begins here and specifies the passing of a argument
printf = ir.Function(m, printf_ty, name="printf")
c_str = builder.alloca(c_str_val.type) #creation of the allocation of the %".2" variable
builder.store(c_str_val, c_str) #store as defined on the next line below %".2"
voidptr_ty = ir.IntType(8).as_pointer()
fmt_arg = builder.bitcast(global_fmt, voidptr_ty) #creates the %".4" variable with the point pointing to the fstr
builder.call(printf, [fmt_arg, c_str]) #We are calling the prinf function with the fmt and arg and returning the value as defiend on the next line
builder.ret_void()
#Next lines are for calling llvm and returning the assembly.
llvm.initialize()
llvm.initialize_native_target()
llvm.initialize_native_asmprinter()
print(str(m)) #PRINTING OUT THE ASSEMBLY
llvm_module = llvm.parse_assembly(str(m)) #Parsing teh assembly
tm = llvm.Target.from_default_triple().create_target_machine() #creating the target machine
with llvm.create_mcjit_compiler(llvm_module, tm) as ee:
ee.finalize_object() #Making sure all modules owned by the execution engine are fully processed and usable for execution
fptr = ee.get_function_address("printer") #fptr will reference the printer function
py_func = CFUNCTYPE(None)(fptr)
py_func() #run the function printer
if __name__ == "__main__":
main()
It appears that I didn't correctly assign the variable and hence why I wasn't returning anything.
I am testing a program executed partially on a MPC603 and partially on a MPC555.
I have to verify that some data is correctly "moved" from one processor to the other via a DPRAM.
I am guessing that at some point "someone" makes a conversion but I don't know how to find what kind of conversion is done.
Here are some examples:
Pt_Dpram->acq1 at 0x8D00008 = 0x3EB2
acq1 = (0xA010538) = 1182451712 = 0x467AC800
Pt_Dpram->acq2 at 0x8D0000A = 0x5528
acq2 = (0xA010540) = 1185566720 = 0x46AA5000
Pt_Dpram->acq3 at 0x8D0000C = 0x416E
acq3 = (0xA010548) = 1107552036 = 0x4203E724
Pt_Dpram->acq4 at 0x8D0000E = 0x413C
acq4 = (0xA010550) = 1107526232 = 0x42038258
I got my answers from a collegue : the values in acqX are in Motorola binary format : http://en.wikipedia.org/wiki/SREC_(file_format)
Here is a small software that does the conversion : http://www.hexworkshop.com/onlinehelp/500/html/idhelp_baseconv.htm
I am having trouble figuring out how to get the length of a matrix within a matrix within a matrix (nested depth of 3). So what the code is doing in short is... looks to see if the publisher is already in the array, then it either adds a new column in the array with a new publisher and the corresponding system, or adds the new system to the existing array publisher
output[k][1] is the publisher array
output[k][2][l] is the system
where the first [] is the amount of different publishers
and the second [] is the amount of different systems within the same publisher
So how would I find out what the length of the third deep array is?
function reviewPubCount()
local output = {}
local k = 0
for i = 1, #keys do
if string.find(tostring(keys[i]), '_') then
key = Split(tostring(keys[i]), '_')
for j = 1, #reviewer_code do
if key[1] == reviewer_code[j] and key[1] ~= '' then
k = k + 1
output[k] = {}
-- output[k] = reviewer_code[j]
for l = 1, k do
if output[l][1] == reviewer_code[j] then
ltable = output[l][2]
temp = table.getn(ltable)
output[l][2][temp+1] = key[2]
else
output[k][1] = reviewer_code[j]
output[k][2][1] = key[2]
end
end
end
end
end
end
return output
end
The code has been fixed here for future reference: http://codepad.org/3di3BOD2#output
You should be able to replace table.getn(t) with #t (it's deprecated in Lua 5.1 and removed in Lua 5.2); instead of this:
ltable = output[l][2]
temp = table.getn(ltable)
output[l][2][temp+1] = key[2]
try this:
output[l][2][#output[l][2]+1] = key[2]
or this:
table.insert(output[l][2], key[2])
What i want is to retrieve quantity in database from piece and covert it to dozen. Then input as dozen and convert back to pieces and save to database again.
when I input data eg. 10.3, it should convert to 123 piece for me ((10 * 12) + 3). My code work well without my "If clause" but only when data was "single" type. It made error when I input integer number, so I added "If.." statement to check it first which is now the output was correct for Integer but incorrect when I input single number.
I have this code..
Function DzToPcs(val)
'If CLng(val) = val then <-- not work
'if Fix(val) <> val then <-- work but the output was not correct when input single type number.
if Int(vInt) = vInt then <-- work but the output was not correct when input single type number.
DztoPcs = val * 12
else
strInt = Cstr(val)
a = Split(strInt,".")
dz = a(0)
pcs = a(1)
getdz = Cint(dz)
getpcs = Cint(pcs)
DztoPcs = (getdz * 12) + getpcs
end if
I'm not sure what's wrong with your if statements (my VBScript is a little rusty), but you could try this alternative:
Function DzToPcs(val)
strInt = Cstr(val)
a = Split(strInt,".")
dz = a(0)
if UBound(a) > 0 then
pcs = a(1)
getdz = Cint(dz)
getpcs = Cint(pcs)
DztoPcs = (getdz * 12) + getpcs
else
DztoPcs = dz * 12
end if
end function