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assign variable socket number to DHCP

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This commit is contained in:
Nick Moore 2019-05-02 14:41:37 +10:00
parent 09b83e96b3
commit 09d0e99d5b
2 changed files with 28 additions and 18 deletions
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44
shared-module/wiznet/wiznet5k.c
View File

@ -93,6 +93,16 @@ int wiznet5k_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_
}
}
int get_available_socket(wiznet5k_obj_t *wiz) {
for (uint8_t sn = 0; sn < _WIZCHIP_SOCK_NUM_; sn++) {
if ((wiz->socket_used & (1 << sn)) == 0) {
wiz->socket_used |= (1 << sn);
return sn;
}
}
return -1;
}
int wiznet5k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
if (socket->u_param.domain != MOD_NETWORK_AF_INET) {
*_errno = MP_EAFNOSUPPORT;
@ -106,14 +116,8 @@ int wiznet5k_socket_socket(mod_network_socket_obj_t *socket, int *_errno) {
}
if (socket->u_param.fileno == -1) {
// get first unused socket number ... 0 is reserved for DHCP
for (mp_uint_t sn = 1; sn < _WIZCHIP_SOCK_NUM_; sn++) {
if ((wiznet5k_obj.socket_used & (1 << sn)) == 0) {
wiznet5k_obj.socket_used |= (1 << sn);
socket->u_param.fileno = sn;
break;
}
}
// get first unused socket number
socket->u_param.fileno = get_available_socket(&wiznet5k_obj);
if (socket->u_param.fileno == -1) {
// too many open sockets
*_errno = MP_EMFILE;
@ -318,33 +322,37 @@ int wiznet5k_socket_ioctl(mod_network_socket_obj_t *socket, mp_uint_t request, m
}
void wiznet5k_socket_timer_tick(mod_network_socket_obj_t *socket) {
if (wiznet5k_obj.dhcp_active) {
if (wiznet5k_obj.dhcp_socket >= 0) {
DHCP_time_handler();
DHCP_run();
}
}
void wiznet5k_start_dhcp(void) {
// XXX this should throw an error if DHCP fails
static DHCP_INIT_BUFFER_TYPE dhcp_buf[DHCP_INIT_BUFFER_SIZE];
if (!wiznet5k_obj.dhcp_active) {
if (wiznet5k_obj.dhcp_socket < 0) {
// Set up the socket to listen on UDP 68 before calling DHCP_init
WIZCHIP_EXPORT(socket)(0, MOD_NETWORK_SOCK_DGRAM, DHCP_CLIENT_PORT, 0);
DHCP_init(0, dhcp_buf);
wiznet5k_obj.dhcp_active = 1;
wiznet5k_obj.dhcp_socket = get_available_socket(&wiznet5k_obj);
if (wiznet5k_obj.dhcp_socket < 0) return;
WIZCHIP_EXPORT(socket)(wiznet5k_obj.dhcp_socket, MOD_NETWORK_SOCK_DGRAM, DHCP_CLIENT_PORT, 0);
DHCP_init(wiznet5k_obj.dhcp_socket, dhcp_buf);
}
}
void wiznet5k_stop_dhcp(void) {
if (wiznet5k_obj.dhcp_active) {
wiznet5k_obj.dhcp_active = 0;
if (wiznet5k_obj.dhcp_socket >= 0) {
DHCP_stop();
WIZCHIP_EXPORT(close)(0);
WIZCHIP_EXPORT(close)(wiznet5k_obj.dhcp_socket);
wiznet5k_obj.socket_used &= ~(1 << wiznet5k_obj.dhcp_socket);
wiznet5k_obj.dhcp_socket = -1;
}
}
bool wiznet5k_check_dhcp(void) {
return wiznet5k_obj.dhcp_active;
return wiznet5k_obj.dhcp_socket >= 0;
}
/// Create and return a WIZNET5K object.
@ -357,6 +365,7 @@ mp_obj_t wiznet5k_create(mp_obj_t spi_in, mp_obj_t cs_in, mp_obj_t rst_in) {
common_hal_digitalio_digitalinout_construct(&wiznet5k_obj.cs, cs_in);
common_hal_digitalio_digitalinout_construct(&wiznet5k_obj.rst, rst_in);
wiznet5k_obj.socket_used = 0;
wiznet5k_obj.dhcp_socket = -1;
/*!< SPI configuration */
// XXX probably should check if the provided SPI is already configured, and
@ -394,6 +403,7 @@ mp_obj_t wiznet5k_create(mp_obj_t spi_in, mp_obj_t cs_in, mp_obj_t rst_in) {
// seems we need a small delay after init
mp_hal_delay_ms(250);
// dhcp is started by default
wiznet5k_start_dhcp();
// register with network module

2
shared-module/wiznet/wiznet5k.h
View File

@ -39,7 +39,7 @@ typedef struct _wiznet5k_obj_t {
digitalio_digitalinout_obj_t cs;
digitalio_digitalinout_obj_t rst;
uint8_t socket_used;
bool dhcp_active;
int8_t dhcp_socket;
} wiznet5k_obj_t;
int wiznet5k_gethostbyname(mp_obj_t nic, const char *name, mp_uint_t len, uint8_t *out_ip);