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cmake_minimum_required(VERSION 3.13)
include(pico_sdk_import.cmake)
project(test_project C CXX ASM)
set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)
pico_sdk_init()
add_executable(test
test.c
)
pico_enable_stdio_usb(test 1)
pico_add_extra_outputs(test)
pico_generate_pio_header(test ${CMAKE_CURRENT_LIST_DIR}/hba_tx.pio)
pico_generate_pio_header(test ${CMAKE_CURRENT_LIST_DIR}/hba_rx.pio)
target_link_libraries(
test pico_stdlib
hardware_pio
pico_multicore
)
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Apache License
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Citation Notice version 1.0
This Citation Notice is part of the LOFAR software suite.
Parties that use ASTRON Software resulting in papers and/or publications are requested to
refer to the DOI(s) that correspond(s) to the version(s) of the ASTRON Software used:
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\ No newline at end of file
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# lofar_hbat_pico
Program to control LOFAR high-band antenna tiles (HBAT) using a raspberry pi pico.
GP15 should be connected to the HBAT communication input.
# Building code
## Requirements
pico-sdk
## Instructions
- mkdir build
- cd build
- cmake ../
- make
- Connect pico while pressing BOOTSEL button
- copy test.uf2 to pico
# Controlling tile
Use jupyter scripts in scripts directory
# Program structure
- hba_tx.pio: Load delay from FIFO, thereafter continiously clock data out as they arrive in FIFO
- hba_rx.pio: Load time-out from FIFO, thereafter continiously: wait for first falling edge, measure time between falling edges and push it to FIFO until time-out.
- test.c:
- Main core:
- Put RX FIFO data into RX buffer as they arrive from PIO
- Put TX buffer data in TX FIFO when available
- Second core:
- Transmit RX buffer data over USB serial when available
- Receive TX data from USB serial and put in TX buffer
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.program hba_rx
.define public T1 8
start:
pull
mov x,OSR
mov y,OSR
begin:
mov x,y
mov ISR,x
push ;A 0 means when just started
wait 1 pin 0 ;wait for high
wait 0 pin 0 ;wait for low
looplow: ;1+T1 instructions per loop, wait for pin to go high
jmp pin loophigh [T1];wait for high
jmp x-- looplow ;
jmp begin ;timeout, start from beginning
loophigh: ; 1+T1 instructions per loop, wait for pin to go low
jmp x-- loophigh2;
jmp begin; timeout, start from beginning
loophigh2:
jmp pin loophigh [T1];wait for low
capture: ; Push x register, start at 0 again
mov ISR,X
push
mov x,y
jmp looplow;
% c-sdk {
static inline void hba_rx_program_init(PIO pio, uint sm, uint offset, uint pin) {
pio_sm_config c = hba_rx_program_get_default_config(offset);
// Map the state machine's OUT pin group to one pin, namely the `pin`
// parameter to this function.
sm_config_set_out_pins(&c, pin, 1);
// Set this pin's GPIO function (connect PIO to the pad)
pio_gpio_init(pio, pin);
// Set the pin direction to output at the PIO
pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, false); //Comment out when using pullups
// pio_sm_set_consecutive_pindirs()
sm_config_set_jmp_pin(&c, pin); // for JMP
sm_config_set_in_pins(&c, pin); // for WAIT
sm_config_set_in_shift(&c, true, true, 16);
//Make clock slower
// pio->sm[0].clkdiv=(uint32_t) (2.5f*(1<<16));
// pio->sm[0].clkdiv=0xff000000;
sm_config_set_clkdiv(&c, 0x40);
// Load our configuration, and jump to the start of the program
pio_sm_init(pio, sm, offset, &c);
// Set the state machine running
pio_sm_set_enabled(pio, sm, true);
}
%}
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.program hba_tx
; Repeatedly get one word of data from the TX FIFO, stalling when the FIFO is
; empty. Write the least significant bit to the OUT pin group.
pull
mov x,OSR
mov y,OSR
set pins, 0
set pindirs, 0 ;High (Input-> should pull high to give high)
.wrap_target
; pull
; set y,7
;bitloop:
out pindirs, 1
; out pins, 1
mov x, y
loop2:
jmp x-- loop2
; jmp y-- bitloop
.wrap
% c-sdk {
static inline void hba_tx_program_init(PIO pio, uint sm, uint offset, uint pin) {
pio_sm_config c = hba_tx_program_get_default_config(offset);
// Map the state machine's OUT pin group to one pin, namely the `pin`
// parameter to this function.
sm_config_set_out_pins(&c, pin, 1);
// Set this pin's GPIO function (connect PIO to the pad)
pio_gpio_init(pio, pin);
// Set the pin direction to output at the PIO
// pio_sm_set_consecutive_pindirs(pio, sm, pin, 1, true); //Comment out when using pullups
sm_config_set_out_shift(&c, true, true, 8);
//Make clock slower
// pio->sm[0].clkdiv=(uint32_t) (2.5f*(1<<16));
// pio->sm[0].clkdiv=0xff000000;
// sm_config_set_clkdiv(&c, 0xff00);
// Load our configuration, and jump to the start of the program
pio_sm_init(pio, sm, offset, &c);
// Set the state machine running
pio_sm_set_enabled(pio, sm, true);
}
%}
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# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
# This can be dropped into an external project to help locate this SDK
# It should be include()ed prior to project()
if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
endif ()
if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
endif ()
set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
if (NOT PICO_SDK_PATH)
if (PICO_SDK_FETCH_FROM_GIT)
include(FetchContent)
set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
if (PICO_SDK_FETCH_FROM_GIT_PATH)
get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
endif ()
FetchContent_Declare(
pico_sdk
GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
GIT_TAG master
)
if (NOT pico_sdk)
message("Downloading Raspberry Pi Pico SDK")
FetchContent_Populate(pico_sdk)
set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
endif ()
set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
else ()
message(FATAL_ERROR
"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
)
endif ()
endif ()
get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
if (NOT EXISTS ${PICO_SDK_PATH})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
endif ()
set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
endif ()
set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
include(${PICO_SDK_INIT_CMAKE_FILE})
scripts/CRC_HBAT1.npy 0 → 100644
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File added
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%% Cell type:code id: tags:
``` python
import numpy as np;
```
%% Cell type:code id: tags:
``` python
S="0x0000, 0xc0c1, 0xc181, 0x0140, 0xc301, 0x03c0, 0x0280, 0xc241,\
0xc601, 0x06c0, 0x0780, 0xc741, 0x0500, 0xc5c1, 0xc481, 0x0440,\
0xcc01, 0x0cc0, 0x0d80, 0xcd41, 0x0f00, 0xcfc1, 0xce81, 0x0e40,\
0x0a00, 0xcac1, 0xcb81, 0x0b40, 0xc901, 0x09c0, 0x0880, 0xc841,\
0xd801, 0x18c0, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0xda81, 0x1a40,\
0x1e00, 0xdec1, 0xdf81, 0x1f40, 0xdd01, 0x1dc0, 0x1c80, 0xdc41,\
0x1400, 0xd4c1, 0xd581, 0x1540, 0xd701, 0x17c0, 0x1680, 0xd641,\
0xd201, 0x12c0, 0x1380, 0xd341, 0x1100, 0xd1c1, 0xd081, 0x1040,\
0xf001, 0x30c0, 0x3180, 0xf141, 0x3300, 0xf3c1, 0xf281, 0x3240,\
0x3600, 0xf6c1, 0xf781, 0x3740, 0xf501, 0x35c0, 0x3480, 0xf441,\
0x3c00, 0xfcc1, 0xfd81, 0x3d40, 0xff01, 0x3fc0, 0x3e80, 0xfe41,\
0xfa01, 0x3ac0, 0x3b80, 0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840,\
0x2800, 0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0, 0x2a80, 0xea41,\
0xee01, 0x2ec0, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0xec81, 0x2c40,\
0xe401, 0x24c0, 0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640,\
0x2200, 0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0, 0x2080, 0xe041,\
0xa001, 0x60c0, 0x6180, 0xa141, 0x6300, 0xa3c1, 0xa281, 0x6240,\
0x6600, 0xa6c1, 0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441,\
0x6c00, 0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0x6e80, 0xae41,\
0xaa01, 0x6ac0, 0x6b80, 0xab41, 0x6900, 0xa9c1, 0xa881, 0x6840,\
0x7800, 0xb8c1, 0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41,\
0xbe01, 0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0xbc81, 0x7c40,\
0xb401, 0x74c0, 0x7580, 0xb541, 0x7700, 0xb7c1, 0xb681, 0x7640,\
0x7200, 0xb2c1, 0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041,\
0x5000, 0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0, 0x5280, 0x9241,\
0x9601, 0x56c0, 0x5780, 0x9741, 0x5500, 0x95c1, 0x9481, 0x5440,\
0x9c01, 0x5cc0, 0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40,\
0x5a00, 0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x5880, 0x9841,\
0x8801, 0x48c0, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x8a81, 0x4a40,\
0x4e00, 0x8ec1, 0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41,\
0x4400, 0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0, 0x4680, 0x8641,\
0x8201, 0x42c0, 0x4380, 0x8341, 0x4100, 0x81c1, 0x8081, 0x4040"
```
%% Cell type:code id: tags:
``` python
D=np.array([int(d,16) for d in S.split(',')],dtype='int')
print([hex(d) for d in D[:10]])
```
%% Output
['0x0', '0xc0c1', '0xc181', '0x140', '0xc301', '0x3c0', '0x280', '0xc241', '0xc601', '0x6c0']
%% Cell type:code id: tags:
``` python
#Parity = count the number of 1s, see if it is even
P=[bin(d)[2:].count('1')%2 for d in range(256)]
print(P[:32])
```
%% Output
[0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1]
%% Cell type:code id: tags:
``` python
#First/5th bit = even/odd
B1=np.array([d%2 for d in range(256)])
B2=np.array([(d//16)%2 for d in range(256)])
B1=B1^B2
print(B1[:32])
```
%% Output
[0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0]
%% Cell type:code id: tags:
``` python
#Correction: Difference between first bit and parity
C=(P+B1)%2
print(C[:32])
```
%% Output
[0 0 1 1 1 1 0 0 1 1 0 0 0 0 1 1 0 0 1 1 1 1 0 0 1 1 0 0 0 0 1 1]
%% Cell type:code id: tags:
``` python
D2=D ^ C*0xc001
print([hex(d) for d in D2[:10]])
```
%% Output
['0x0', '0xc0c1', '0x180', '0xc141', '0x300', '0xc3c1', '0x280', '0xc241', '0x600', '0xc6c1']
%% Cell type:code id: tags:
``` python
S2=''
for i in range(256):
S2+=hex(D2[i]);
if i%8<7:
S2+=", "
else:
S2+=",\n"
print(S2)
```
%% Output
0x0, 0xc0c1, 0x180, 0xc141, 0x300, 0xc3c1, 0x280, 0xc241,
0x600, 0xc6c1, 0x780, 0xc741, 0x500, 0xc5c1, 0x480, 0xc441,
0xcc01, 0xcc0, 0xcd81, 0xd40, 0xcf01, 0xfc0, 0xce81, 0xe40,
0xca01, 0xac0, 0xcb81, 0xb40, 0xc901, 0x9c0, 0xc881, 0x840,
0x1800, 0xd8c1, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0x1a80, 0xda41,
0x1e00, 0xdec1, 0x1f80, 0xdf41, 0x1d00, 0xddc1, 0x1c80, 0xdc41,
0xd401, 0x14c0, 0xd581, 0x1540, 0xd701, 0x17c0, 0xd681, 0x1640,
0xd201, 0x12c0, 0xd381, 0x1340, 0xd101, 0x11c0, 0xd081, 0x1040,
0x3000, 0xf0c1, 0x3180, 0xf141, 0x3300, 0xf3c1, 0x3280, 0xf241,
0x3600, 0xf6c1, 0x3780, 0xf741, 0x3500, 0xf5c1, 0x3480, 0xf441,
0xfc01, 0x3cc0, 0xfd81, 0x3d40, 0xff01, 0x3fc0, 0xfe81, 0x3e40,
0xfa01, 0x3ac0, 0xfb81, 0x3b40, 0xf901, 0x39c0, 0xf881, 0x3840,
0x2800, 0xe8c1, 0x2980, 0xe941, 0x2b00, 0xebc1, 0x2a80, 0xea41,
0x2e00, 0xeec1, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0x2c80, 0xec41,
0xe401, 0x24c0, 0xe581, 0x2540, 0xe701, 0x27c0, 0xe681, 0x2640,
0xe201, 0x22c0, 0xe381, 0x2340, 0xe101, 0x21c0, 0xe081, 0x2040,
0x6000, 0xa0c1, 0x6180, 0xa141, 0x6300, 0xa3c1, 0x6280, 0xa241,
0x6600, 0xa6c1, 0x6780, 0xa741, 0x6500, 0xa5c1, 0x6480, 0xa441,
0xac01, 0x6cc0, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0xae81, 0x6e40,
0xaa01, 0x6ac0, 0xab81, 0x6b40, 0xa901, 0x69c0, 0xa881, 0x6840,
0x7800, 0xb8c1, 0x7980, 0xb941, 0x7b00, 0xbbc1, 0x7a80, 0xba41,
0x7e00, 0xbec1, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0x7c80, 0xbc41,
0xb401, 0x74c0, 0xb581, 0x7540, 0xb701, 0x77c0, 0xb681, 0x7640,
0xb201, 0x72c0, 0xb381, 0x7340, 0xb101, 0x71c0, 0xb081, 0x7040,
0x5000, 0x90c1, 0x5180, 0x9141, 0x5300, 0x93c1, 0x5280, 0x9241,
0x5600, 0x96c1, 0x5780, 0x9741, 0x5500, 0x95c1, 0x5480, 0x9441,
0x9c01, 0x5cc0, 0x9d81, 0x5d40, 0x9f01, 0x5fc0, 0x9e81, 0x5e40,
0x9a01, 0x5ac0, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x9881, 0x5840,
0x4800, 0x88c1, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x4a80, 0x8a41,
0x4e00, 0x8ec1, 0x4f80, 0x8f41, 0x4d00, 0x8dc1, 0x4c80, 0x8c41,
0x8401, 0x44c0, 0x8581, 0x4540, 0x8701, 0x47c0, 0x8681, 0x4640,
0x8201, 0x42c0, 0x8381, 0x4340, 0x8101, 0x41c0, 0x8081, 0x4040,
%% Cell type:code id: tags:
``` python
```
scripts/hbat1.py 0 → 100644
+ 113
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import numpy as np
def GetDelay(ser,Start=0x1000):
a=0;
D=[]
Start=0x1000
while a!=b'':
a=ser.readline()[:8]
# print(a)
if a==b'': break;
a=str(a,'UTF-8')
a=Start-int(a,16)
# print(a)
if (a==0): break;
D.append(a)
return D;
def NormDelays(D,offset=19,scale=20):
return [(d+offset)//scale for d in D] #shorter (inbetween) delay = waiting for FIFO
def Decode(D2):
previous="0";
res=''
for b in D2[:]:
if b>=6: #Start a new packet
#n=(8-len(res)%8)%8
n=(len(res)//8)*8
#res+=n*"0"
res=res[:n]
previous="0"
# print(n,res,previous)
else:
if previous=="0":
bit="0" if b<=2 else "01"
else:
if b==2: bit="1"
elif b==3: bit="0"
else: bit="01"
# print(previous,b,bit)
previous=bit[-1];
res+=bit;
#print(res)
res=res[2:]
# print("len",len(res)//8)
S=[]
for x in range(len(res)//8):
v1=int(res[x*8:x*8+8],2)
# print(x,res[x*8:x*8+8],v1)
S.append(v1)
return(S)
CRCtab=np.load("CRC_HBAT1.npy")
CRCtabl=[d%256 for d in CRCtab]
CRCtabh=[d//256 for d in CRCtab]
def CRCcheck(S1):
crcl=0;crch=0;
for b in S1:
i=crcl ^ b
crcl=crch ^ CRCtabl[i]
crch=CRCtabh[i]
# print(i,CRCtabh[i])
# crch=crcl ^ CRCtabh[i]
# crcl= CRCtabl[i]
return crch*256+crcl
def MakeBroadcast(data,func=4,reg=0,serv1=1,serv2=16):
assert(len(data)==32)
data2=[func,reg,serv1,serv2]+data
l=len(data2)+1
data2=[0,l]+data2
CRC=CRCcheck(data2)
data2=data2+[CRC%256,CRC//256]
assert(CRCcheck(data2)==0)
return data2
def MakeRequest(serv,data=[],func=5,reg=0):
data2=[func,reg]+data
l=len(data2)+1
data2=[serv,l]+data2
CRC=CRCcheck(data2)
data2=data2+[CRC%256,CRC//256]
assert(CRCcheck(data2)==0)
return data2
#Mlookup=[0x55,0x56,0x59,0x5A,0x65,0x66,0x69,0x6A,0x95,0x96,0x99,0x9A,0xA5,0xA6,0xA9,0xAA]
Mlookup=[0xAA,0x6A,0x9A,0x5A,0xA6,0x66,0x96,0x56,0xA9,0x69,0x99,0x59,0xA5,0x65,0x95,0x55]
def ManchesterEncode(data):
# Inverted: 0=input=high, 1=output=low. Applied at end.
# Data clocked out MSB first, send on wire LSB first!
data2=[0xff,0x0f,0xa8] #------------_______-_- Start sequence
for d in data:
data2+=[Mlookup[d//16]]
data2+=[Mlookup[d%16]]
data2+=[0xfd]
return [255-d for d in data2]
def Loopback(TX2):
#Calculte time between edges
S=''
for b in TX2:
S+="{0:08b}".format(255-b)[::-1]
print("Loopback bits:",S[:30])
T=[0]
for i in range(len(S)-1):
if (S[i]=='1') and (S[i+1]=="0"): T+=[i]
T=np.array(T[1:])
T=T[1:]-T[:-1]
print("Loopback delay:",T[:30])
return T
\ No newline at end of file
scripts/monitor.sh 0 → 100644
+ 1
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sudo minicom -b 115200 -o -D /dev/ttyACM0
scripts/test1.ipynb 0 → 100644
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scripts/test_loopback.ipynb 0 → 100644
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test.c 0 → 100644
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#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "pico/binary_info.h"
#include "pico/multicore.h"
#include "hardware/pio.h"
#include "hba_tx.pio.h"
#include "hba_rx.pio.h"
const uint TX_PIN = 14; //25=LED to test
const uint RX_PIN = 14;
#define BUFFERSIZE 512
char buffer1[BUFFERSIZE];
uint16_t buffer2[BUFFERSIZE];
int bcnt1=0,bcnt2=0;
int bcnt3=0,bcnt4=0;
void core1_entry() {
while (1) {
if (bcnt3!=bcnt4) {
printf("%08x\n", buffer2[bcnt4]);
bcnt4++;bcnt4%=BUFFERSIZE;
}
else {
int x = getchar_timeout_us(0);
if (x!=PICO_ERROR_TIMEOUT){
buffer1[bcnt1]=x;
bcnt1++;bcnt1%=BUFFERSIZE;
}
}
}};
int main() {
// bi_decl(bi_program_description("This is a test binary."));
// bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED"));
stdio_init_all();
PIO pio_rx = pio1;
uint offset1 = pio_add_program(pio_rx, &hba_rx_program);
uint sm1 = pio_claim_unused_sm(pio_rx, true);
hba_rx_program_init(pio_rx, sm1, offset1, RX_PIN);
PIO pio_tx = pio0;
uint offset = pio_add_program(pio_tx, &hba_tx_program);
uint sm = pio_claim_unused_sm(pio_tx, true);
hba_tx_program_init(pio_tx, sm, offset, TX_PIN);
// gpio_init(LED_PIN);
// gpio_set_dir(LED_PIN, GPIO_OUT);
gpio_set_pulls(TX_PIN,true,false);
// gpio_set_pulls(RX_PIN,true,false);
pio_sm_put_blocking(pio_tx, sm , 12500); //Bitrate = 150e6 / val. e.g. 15k = 10kHz
pio_sm_put_blocking(pio_rx, sm1, 0x1000); //Timeout
pio_sm_put_blocking(pio_tx, sm, 0x00);
multicore_launch_core1(core1_entry);
while (1) {
// gpio_put(LED_PIN, 0);
// printf("TX:%08x\n",pio_sm_get_tx_fifo_level(pio_tx, sm));
// printf("%32x\n", pio_sm_get_blocking(pio_rx, sm1));
if (pio_sm_get_rx_fifo_level(pio_rx, sm1)>0) { //First priority: Keep RX FIFO empty
buffer2[bcnt3]=(uint16_t)(pio_sm_get_blocking(pio_rx, sm1));
bcnt3++;bcnt3%=BUFFERSIZE;
} else if ((pio_sm_get_tx_fifo_level(pio_tx, sm)<4) && (bcnt1!=bcnt2)) { //Second priority: Keep TX FIFO full
// printf("TX%x\n",buffer1[bcnt2]);
pio_sm_put_blocking(pio_tx, sm, buffer1[bcnt2]);
bcnt2++;bcnt2%=BUFFERSIZE;
};
/* else if (bcnt3!=bcnt4) {
printf("%08x\n", buffer2[bcnt4]);
bcnt4++;bcnt4%=BUFFERSIZE;
}
else {
int x = getchar_timeout_us(0);
if (x!=PICO_ERROR_TIMEOUT){
buffer1[bcnt1]=x;
bcnt1++;bcnt1%=BUFFERSIZE;
}
}
*/
// sleep_ms(250);
// pio_sm_put_blocking(pio, sm, 0);
// gpio_put(LED_PIN, 1);
// puts("Hello World\n");
// sleep_ms(1000);
}
}
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