libsi24: return bytes sent in si24_send

diff --git a/libsi24.c b/libsi24.c
index 32f78a2..08fcdd6 100644 (file)
--- a/libsi24.c
+++ b/libsi24.c
@@ -169,6 +169,7 @@ si24_t* si24_init(const si24_opts_t *opts, si24_event_handler_t eh)
 size_t si24_send(si24_t* si, const unsigned char * buf, size_t size)
 {
        si24_event_t ev;
+       size_t bytes_sent = 0;
        uint16_t timeout = 0;
        int sz;
        uint8_t flags;
@@ -215,7 +216,7 @@ size_t si24_send(si24_t* si, const unsigned char * buf, size_t size)
                        si24_reset(si);
                        return -1;
                }
-
+               bytes_sent += sz;
                timeout = 0;
        }
 
@@ -223,7 +224,7 @@ size_t si24_send(si24_t* si, const unsigned char * buf, size_t size)
        si->eh(si, &ev);
        si->ctl->chip_enable(0);
 
-       return 0;
+       return bytes_sent;
 }
 
 size_t si24_recv(si24_t* si, unsigned char * buf, size_t size) 
@@ -306,10 +307,13 @@ int spi_w_r(unsigned char *data, size_t sz)
 
 void ce(unsigned val)
 {
+       (void) val;
 }
 
 void eh(si24_t *si, si24_event_t * e)
 {
+       (void) si;
+
        switch(e->type) {
                case EV_TX_COMPLETE:
                        printf("SENT SUCCESFUL\n");
@@ -331,7 +335,7 @@ void eh(si24_t *si, si24_event_t * e)
 
 int main(void)
 {
-       const unsigned char buf[] = "THIS IS A WIRELESS TEST MESSAGE!";
+       /* const unsigned char buf[] = "THIS IS A WIRELESS TEST MESSAGE!";*/
        unsigned char recv_buf[29];
 
        si24_ioctl_t ctl = {