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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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16
api/mraa/spi.hpp
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@@ -91,20 +91,20 @@ class Spi {
* @param data the byte to send
* @return data received on the miso line
*/
char write(char data) {
return (char) mraa_spi_write(m_spi, (uint8_t) data);
uint8_t writeByte(uint8_t data) {
return mraa_spi_write(m_spi, (uint8_t) data);
}
/**
* Write buffer of bytes to SPI device The pointer return has to be
* free'd by the caller. It will return a NULL pointer in cases of
* error
*
* @param data buffer to send
* @param txBuf buffer to send
* @param length size of buffer to send
* @return char* data received on the miso line. Same length as passed in
* @return uint8_t* data received on the miso line. Same length as passed in
*/
char* write(char* data, size_t length) {
return (char*) mraa_spi_write_buf(m_spi, (uint8_t *) data, (int) length);
uint8_t* write(uint8_t* txBuf, int length) {
return mraa_spi_write_buf(m_spi, txBuf, length);
}
#ifndef SWIG
/**
@@ -116,8 +116,8 @@ class Spi {
* @param length size of buffer to send
* @return Result of operation
*/
mraa_result_t transfer(char* data, char* rxBuf, size_t length) {
return mraa_spi_transfer_buf(m_spi, (uint8_t *) data, (uint8_t *)rxBuf, (int) length);
mraa_result_t transfer(uint8_t* txBuf, uint8_t* rxBuf, int length) {
return mraa_spi_transfer_buf(m_spi, txBuf, rxBuf, length);
}
#endif
/**