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spi: Make Spi write() work from SWIG with typemaps

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This change also changes the C++ API write(char) call to writeByte(uint8_t) and
the write() call now takes a uint8_t* instead of a char*. This should not alter
any code significantly and does not affect the C API.

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Brendan Le Foll
2015-01-14 11:41:43 +00:00
parent 17ee0c9669
commit b7a0856f51
6 changed files with 160 additions and 11 deletions
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6
examples/c++/Spi-pot.cpp
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@@ -48,9 +48,9 @@ int main ()
spi = new mraa::Spi(0);
char data[] = {0x00, 100};
char rxBuf[2];
char *recv;
uint8_t data[] = {0x00, 100};
uint8_t rxBuf[2];
uint8_t *recv;
while (running == 0) {
int i;
for (i = 90; i < 130; i++) {

41
examples/javascript/spi.js Normal file
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@@ -0,0 +1,41 @@
#!/usr/bin/env node
/*
* Author: Brendan Le Foll <brendan.le.foll@intel.com>
* Copyright (c) 2015 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
var m = require('mraa'); //require mraa
// helper function to go from hex val to dec
function char(x) { return parseInt(x, 16); }
x = new m.Spi(0)
buf = new Buffer(4)
buf[0] = char('0xf4')
buf[1] = char('0x2e')
buf[2] = char('0x3e')
buf[3] = char('0x4e')
buf2 = x.write(buf)
console.log("Sent: " + buf.toString('hex') + ". Received: " + buf2.toString('hex'))

43
examples/python/spi.py Normal file
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@@ -0,0 +1,43 @@
#!/usr/bin/env python
# Author: Brendan Le Foll <brendan.le.foll@intel.com>
# Copyright (c) 2015 Intel Corporation.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
import mraa as m
import random as rand
# Excuse the super boring example, I was out of fun devices to play with, this
# will write and read the same data back to itself, a few 100 times, just short
# MISO & MOSI on your board
dev = m.Spi(0)
for x in range(0,100):
txbuf = bytearray(4)
for y in range(0,4):
txbuf[y] = rand.randrange(0, 256)
rxbuf = dev.write(txbuf)
if rxbuf != txbuf:
print("We have an error captain!")
break
exit(1)