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posix: use IOSSIOSPEED ioctl on OS X to set speed - allows for max baud rates

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This commit is contained in:
Matthias Ringwald 2016-10-21 23:31:28 +02:00
parent 405d63a9b7
commit e690b6a5e4
1 changed files with 31 additions and 9 deletions
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40
platform/posix/btstack_uart_block_posix.c
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@ -49,6 +49,12 @@
#include <termios.h> /* POSIX terminal control definitions */
#include <fcntl.h> /* File control definitions */
#include <unistd.h> /* UNIX standard function definitions */
#include <string.h>
#include <errno.h>
#ifdef __APPLE__
#include <sys/ioctl.h>
#include <IOKit/serial/ioss.h>
#endif
// uart config
static const btstack_uart_config_t * uart_config;
@ -151,16 +157,32 @@ static void hci_transport_h5_process(btstack_data_source_t *ds, btstack_data_sou
}
}
static int btstack_uart_posix_set_baudrate(uint32_t baudrate){
static int btstack_uart_posix_set_baudrate(uint32_t baudrate){
int fd = transport_data_source.fd;
log_info("h4_set_baudrate %u", baudrate);
#ifdef __APPLE__
// From https://developer.apple.com/library/content/samplecode/SerialPortSample/Listings/SerialPortSample_SerialPortSample_c.html
// The IOSSIOSPEED ioctl can be used to set arbitrary baud rates
// other than those specified by POSIX. The driver for the underlying serial hardware
// ultimately determines which baud rates can be used. This ioctl sets both the input
// and output speed.
speed_t speed = baudrate;
if (ioctl(fd, IOSSIOSPEED, &speed) == -1) {
log_error("btstack_uart_posix_set_baudrate: error calling ioctl(..., IOSSIOSPEED, %u) - %s(%d).\n", baudrate, strerror(errno), errno);
return -1;
}
#else
struct termios toptions;
if (tcgetattr(fd, &toptions) < 0) {
perror("posix_open: Couldn't get term attributes");
log_error("btstack_uart_posix_set_baudrate: Couldn't get term attributes");
return -1;
}
@ -205,9 +227,10 @@ static int btstack_uart_posix_set_baudrate(uint32_t baudrate){
cfsetispeed(&toptions, brate);
if( tcsetattr(fd, TCSANOW, &toptions) < 0) {
perror("posix_set_baudrate: Couldn't set term attributes");
log_error("btstack_uart_posix_set_baudrate: Couldn't set term attributes");
return -1;
}
#endif
return 0;
}
@ -222,13 +245,12 @@ static int btstack_uart_posix_open(void){
int flags = O_RDWR | O_NOCTTY | O_NONBLOCK;
int fd = open(device_name, flags);
if (fd == -1) {
perror("posix_open: Unable to open port ");
perror(device_name);
log_error("posix_open: Unable to open port %s", device_name);
return -1;
}
if (tcgetattr(fd, &toptions) < 0) {
perror("posix_open: Couldn't get term attributes");
log_error("posix_open: Couldn't get term attributes");
return -1;
}
@ -258,7 +280,7 @@ static int btstack_uart_posix_open(void){
toptions.c_cc[VTIME] = 0;
if(tcsetattr(fd, TCSANOW, &toptions) < 0) {
perror("posix_open: Couldn't set term attributes");
log_error("posix_open: Couldn't set term attributes");
return -1;
}
@ -303,7 +325,7 @@ static int btstack_uart_posix_set_parity(int parity){
struct termios toptions;
if (tcgetattr(fd, &toptions) < 0) {
perror("posix_set_parity: Couldn't get term attributes");
log_error("btstack_uart_posix_set_parity: Couldn't get term attributes");
return -1;
}
if (parity){
@ -312,7 +334,7 @@ static int btstack_uart_posix_set_parity(int parity){
toptions.c_cflag &= ~PARENB; // enable even parity
}
if(tcsetattr(fd, TCSANOW, &toptions) < 0) {
perror("posix_set_parity: Couldn't set term attributes");
log_error("posix_set_parity: Couldn't set term attributes");
return -1;
}
return 0;