implementation for avr programmer

the programmer will receive the binary in blocks of defined size
by a program under sw/programmer/linux (moved from sw/linux).

1 files changed, 42 insertions, 0 deletions

diff --git a/sw/programmer/linux/src/serial.c b/sw/programmer/linux/src/serial.c
new file mode 100644
index 0000000..564676b
--- /dev/null
+++ b/sw/programmer/linux/src/serial.c
@@ -0,0 +1,42 @@
+#include "serial.h"
+
+int serial_connect(const char *devpath, long baudrate)
+{
+    int fd;
+    struct termios tty;
+    // struct termios tty_old;
+    
+    // open device
+    if ((fd = open(devpath, O_RDWR | O_NOCTTY)) < 0) {
+        return -1;
+    }
+
+    // set parameters
+    if (tcgetattr(fd, &tty) != 0) {
+        return -1;
+    }
+
+    // TODO: update UI or add support for custom baudrate
+    // cfsetospeed(&tty, 
+    // cfsetispeed(&tty, 
+
+    tty.c_cflag &= ~PARENB;  // no parity
+    tty.c_cflag &= ~CSTOPB;  // no stop bit
+    tty.c_cflag |= CS8;      // 8 bit data
+    tty.c_cflag &= ~CRTSCTS; // no flow control
+
+    tty.c_lflag     =  0;  // no signaling chars, no echo, no canonical processing
+    tty.c_oflag     =  0;  // no remapping, no delays
+    tty.c_cc[VMIN]  =  0;  // no block read
+    tty.c_cc[VTIME] = .5;  // .5 seconds read timeout
+
+    tty.c_cflag |= CREAD | CLOCAL;      // turn on read and ignore ctrl lines
+    tty.c_iflag &= ~(IXON | IXOFF | IXANY); // turn off s/w flow ctrl
+    tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); // make raw
+    tty.c_oflag &= ~OPOST; // make raw
+
+    tcflush(fd , TCIFLUSH);
+    // if (tcsetaddr(
+
+    return fd;
+}