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Add STP handling

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Adds a timeer for calling the STP state machine which currently sends out
CNF (HELLO) packages.

Identifies incoming STP packets and calls the stp_in() routine to handle these.
This commit is contained in:
logicog
2025-09-08 22:22:57 +02:00
parent 571bfef810
commit 9ad5fcb43e
1 changed files with 21 additions and 11 deletions
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rtlplayground.c
+21 -11
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@@ -54,6 +54,10 @@ __xdata uint8_t isRTL8373;
volatile __xdata uint32_t ticks;
volatile __xdata uint8_t sec_counter;
volatile __xdata uint16_t sleep_ticks;
__xdata uint8_t stp_clock;
#define STP_TICK_DIVIDER 3
// Buffer for serial input, SBUF_SIZE must be power of 2 < 256
__xdata volatile uint8_t sbuf_ptr;
@@ -79,6 +83,7 @@ __xdata uint8_t minPort;
__xdata uint8_t maxPort;
__xdata uint8_t nSFPPorts;
__xdata uint8_t cpuPort;
__xdata uint8_t stpEnabled;
__code uint16_t bit_mask[16] = {
0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
@@ -371,7 +376,7 @@ void reg_bit_clear(uint16_t reg_addr, char bit)
}
/*
* This masks the sfr data fields, first &-ing with ~mask, the setting the bits in set
* This masks the sfr data fields, first &-ing with ~mask, then setting the bits in set
*/
void sfr_mask_data(uint8_t n, uint8_t mask, uint8_t set)
{
@@ -816,16 +821,11 @@ void handle_rx(void)
#ifdef RXTXDBG
print_string(" RX-VLAN: "); print_short(rx_packet_vlan); write_char('\n');
#endif
if (uip_buf[0] == 0x01 && uip_buf[1] == 0x80 && uip_buf[2] == 0xc2 // STP packet?
if (stpEnabled && uip_buf[0] == 0x01 && uip_buf[1] == 0x80 && uip_buf[2] == 0xc2 // STP packet?
&& uip_buf[3] == 0x00 && uip_buf[4] == 0x00 && uip_buf[5] == 0x00) {
print_string("STP: \n");
for (uint8_t i = 0; i < 80; i++) {
print_byte(uip_buf[i]);
write_char(' ');
}
write_char('\n');
for (uint8_t i = minPort; i <=maxPort; i++ ) {
stp_cnf_send(i);
stp_in();
if (uip_len) {
print_string("STP TX\n");
tcpip_output();
}
} else if (uip_buf[ETHERTYPE_OFFSET] == 0x08 && uip_buf[ETHERTYPE_OFFSET + 1] == 0x06) { // ARP?
@@ -1008,6 +1008,15 @@ void idle(void)
handle_rx();
// Check UIP for packets to transmit
handle_tx();
// If STP protocol enabled, decrease STP timers to trigger actions
if (stpEnabled) {
if (!stp_clock) {
stp_clock = STP_TICK_DIVIDER;
stp_timers();
} else {
stp_clock--;
}
}
}
@@ -1641,6 +1650,7 @@ void setup_i2c(void)
void bootloader(void)
{
ticks = 0;
stp_clock = STP_TICK_DIVIDER;
sbuf_ptr = 0;
CKCON = 0; // Initial Clock configuration
@@ -1720,7 +1730,7 @@ void bootloader(void)
REG_SET(RTL837X_REG_SEC_COUNTER, 0x3); write_char(' ');
print_reg(RTL837X_REG_SEC_COUNTER);
#endif
stpEnabled = 0;
nic_setup();
vlan_setup();
port_l2_setup();