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posix: fix RTS/CTS configuration by keeping local termios copy

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This commit is contained in:
Matthias Ringwald 2022-02-05 23:09:03 +01:00
parent aaa1682ba2
commit 4437baf628
2 changed files with 27 additions and 37 deletions
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1
CHANGELOG.md
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@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
- GATT Service: Volume Control Service Server (VCS 1.0)
### Fixed
- POSIX: fix RTS/CTS configuration by keeping local termios copy in btstack_uart_posix
- GAP: disable scanning, advertising, connection before updating random address
- HFP_AG: fix tracking for call dropped during outgoing ringing
- HFP: Free HFP Connection object on SDP error / Service not found

63
platform/posix/btstack_uart_posix.c
View File

@ -61,6 +61,10 @@
// uart config
static const btstack_uart_config_t * uart_config;
// on macOS 12.1, CTS/RTS control flags are always read back as zero.
// To work around this, we cache our terios settings
struct termios btstack_uart_block_termios;
// data source for integration with BTstack Runloop
static btstack_data_source_t transport_data_source;
@ -164,13 +168,6 @@ static int btstack_uart_posix_set_baudrate(uint32_t baudrate){
log_info("h4_set_baudrate %u", baudrate);
struct termios toptions;
if (tcgetattr(fd, &toptions) < 0) {
log_error("btstack_uart_posix_set_baudrate: Couldn't get term attributes");
return -1;
}
#ifndef __APPLE__
speed_t brate = baudrate; // let you override switch below if needed
@ -223,14 +220,14 @@ static int btstack_uart_posix_set_baudrate(uint32_t baudrate){
log_error("can't set baudrate %dn", baudrate );
return -1;
}
cfsetospeed(&toptions, brate);
cfsetispeed(&toptions, brate);
cfsetospeed(&btstack_uart_block_termios, brate);
cfsetispeed(&btstack_uart_block_termios, brate);
#endif
// also set options for __APPLE__ to enforce write drain
// Mac OS Mojave: tcsdrain did not work as expected
if( tcsetattr(fd, TCSADRAIN, &toptions) < 0) {
if( tcsetattr(fd, TCSADRAIN, &btstack_uart_block_termios) < 0) {
log_error("Couldn't set term attributes");
return -1;
}
@ -283,13 +280,9 @@ static void btstack_uart_posix_set_flowcontrol_option(struct termios * toptions,
static int btstack_uart_posix_set_parity(int parity){
int fd = transport_data_source.source.fd;
struct termios toptions;
if (tcgetattr(fd, &toptions) < 0) {
log_error("Couldn't get term attributes");
return -1;
}
btstack_uart_posix_set_parity_option(&toptions, parity);
if(tcsetattr(fd, TCSANOW, &toptions) < 0) {
btstack_uart_posix_set_parity_option(&btstack_uart_block_termios, parity);
printf("set parity %lx", btstack_uart_block_termios.c_cflag);
if(tcsetattr(fd, TCSANOW, &btstack_uart_block_termios) < 0) {
log_error("Couldn't set term attributes");
return -1;
}
@ -299,13 +292,9 @@ static int btstack_uart_posix_set_parity(int parity){
static int btstack_uart_posix_set_flowcontrol(int flowcontrol){
int fd = transport_data_source.source.fd;
struct termios toptions;
if (tcgetattr(fd, &toptions) < 0) {
log_error("Couldn't get term attributes");
return -1;
}
btstack_uart_posix_set_flowcontrol_option(&toptions, flowcontrol);
if(tcsetattr(fd, TCSANOW, &toptions) < 0) {
btstack_uart_posix_set_flowcontrol_option(&btstack_uart_block_termios, flowcontrol);
printf("set flow %lx", btstack_uart_block_termios.c_cflag);
if(tcsetattr(fd, TCSANOW, &btstack_uart_block_termios) < 0) {
log_error("Couldn't set term attributes");
return -1;
}
@ -319,7 +308,6 @@ static int btstack_uart_posix_open(void){
const int flowcontrol = uart_config->flowcontrol;
const int parity = uart_config->parity;
struct termios toptions;
int flags = O_RDWR | O_NOCTTY | O_NONBLOCK;
int fd = open(device_name, flags);
if (fd == -1) {
@ -327,31 +315,32 @@ static int btstack_uart_posix_open(void){
return -1;
}
if (tcgetattr(fd, &toptions) < 0) {
if (tcgetattr(fd, &btstack_uart_block_termios) < 0) {
log_error("Couldn't get term attributes");
return -1;
}
cfmakeraw(&toptions); // make raw
cfmakeraw(&btstack_uart_block_termios); // make raw
// 8N1
toptions.c_cflag &= ~CSTOPB;
toptions.c_cflag |= CS8;
btstack_uart_block_termios.c_cflag &= ~CSTOPB;
btstack_uart_block_termios.c_cflag |= CS8;
toptions.c_cflag |= CREAD | CLOCAL; // turn on READ & ignore ctrl lines
toptions.c_iflag &= ~(IXON | IXOFF | IXANY); // turn off s/w flow ctrl
btstack_uart_block_termios.c_cflag |= CREAD | CLOCAL; // turn on READ & ignore ctrl lines
btstack_uart_block_termios.c_iflag &= ~(IXON | IXOFF | IXANY); // turn off s/w flow ctrl
// see: http://unixwiz.net/techtips/termios-vmin-vtime.html
toptions.c_cc[VMIN] = 1;
toptions.c_cc[VTIME] = 0;
btstack_uart_block_termios.c_cc[VMIN] = 1;
btstack_uart_block_termios.c_cc[VTIME] = 0;
// no parity
btstack_uart_posix_set_parity_option(&toptions, parity);
btstack_uart_posix_set_parity_option(&btstack_uart_block_termios, parity);
// flowcontrol
btstack_uart_posix_set_flowcontrol_option(&toptions, flowcontrol);
btstack_uart_posix_set_flowcontrol_option(&btstack_uart_block_termios, flowcontrol);
if(tcsetattr(fd, TCSANOW, &toptions) < 0) {
printf("init %lx", btstack_uart_block_termios.c_cflag);
if(tcsetattr(fd, TCSANOW, &btstack_uart_block_termios) < 0) {
log_error("Couldn't set term attributes");
return -1;
}