--- a/master/slave.c Mon Mar 20 13:36:10 2006 +0000
+++ b/master/slave.c Mon Mar 20 15:28:25 2006 +0000
@@ -34,6 +34,7 @@
slave->base_sync_count = 0;
slave->ring_position = 0;
slave->station_address = 0;
+ slave->sii_alias = 0;
slave->sii_vendor_id = 0;
slave->sii_product_code = 0;
slave->sii_revision_number = 0;
@@ -85,6 +86,12 @@
// Read identification from "Slave Information Interface" (SII)
+ if (unlikely(ec_slave_sii_read(slave, 0x0004,
+ (uint32_t *) &slave->sii_alias))) {
+ EC_ERR("Could not read SII alias!\n");
+ return -1;
+ }
+
if (unlikely(ec_slave_sii_read(slave, 0x0008, &slave->sii_vendor_id))) {
EC_ERR("Could not read SII vendor id!\n");
return -1;
@@ -134,10 +141,9 @@
// Initiate read operation
- EC_WRITE_U8 (data, 0x00);
- EC_WRITE_U8 (data + 1, 0x01);
- EC_WRITE_U16(data + 2, offset);
- EC_WRITE_U16(data + 4, 0x0000);
+ EC_WRITE_U8 (data, 0x00); // read-only access
+ EC_WRITE_U8 (data + 1, 0x01); // request read operation
+ EC_WRITE_U32(data + 2, offset);
ec_command_init_npwr(&command, slave->station_address, 0x502, 6, data);
if (unlikely(ec_master_simple_io(slave->master, &command))) {
@@ -166,7 +172,7 @@
end = get_cycles();
if (likely((EC_READ_U8(command.data + 1) & 0x81) == 0)) {
- memcpy(target, command.data + 6, 4);
+ *target = EC_READ_U32(command.data + 6);
return 0;
}
@@ -180,6 +186,81 @@
/*****************************************************************************/
/**
+ Schreibt Daten in das Slave-Information-Interface
+ eines EtherCAT-Slaves.
+
+ \return 0 bei Erfolg, sonst < 0
+*/
+
+int ec_slave_sii_write(ec_slave_t *slave,
+ /**< EtherCAT-Slave */
+ uint16_t offset,
+ /**< Adresse des zu lesenden SII-Registers */
+ uint16_t value
+ /**< Zu schreibender Wert */
+ )
+{
+ ec_command_t command;
+ uint8_t data[8];
+ cycles_t start, end, timeout;
+
+ EC_INFO("SII-write (slave %i, offset 0x%04X, value 0x%04X)\n",
+ slave->ring_position, offset, value);
+
+ // Initiate write operation
+
+ EC_WRITE_U8 (data, 0x01); // enable write access
+ EC_WRITE_U8 (data + 1, 0x02); // request write operation
+ EC_WRITE_U32(data + 2, offset);
+ EC_WRITE_U16(data + 6, value);
+
+ ec_command_init_npwr(&command, slave->station_address, 0x502, 8, data);
+ if (unlikely(ec_master_simple_io(slave->master, &command))) {
+ EC_ERR("SII-write failed on slave %i!\n", slave->ring_position);
+ return -1;
+ }
+
+ // Der Slave legt die Informationen des Slave-Information-Interface
+ // in das Datenregister und löscht daraufhin ein Busy-Bit. Solange
+ // den Status auslesen, bis das Bit weg ist.
+
+ start = get_cycles();
+ timeout = cpu_khz; // 1ms
+
+ while (1)
+ {
+ udelay(10);
+
+ ec_command_init_nprd(&command, slave->station_address, 0x502, 2);
+ if (unlikely(ec_master_simple_io(slave->master, &command))) {
+ EC_ERR("Getting SII-write status failed on slave %i!\n",
+ slave->ring_position);
+ return -1;
+ }
+
+ end = get_cycles();
+
+ if (likely((EC_READ_U8(command.data + 1) & 0x82) == 0)) {
+ if (EC_READ_U8(command.data + 1) & 0x40) {
+ EC_ERR("SII-write failed!\n");
+ return -1;
+ }
+ else {
+ EC_INFO("SII-write succeeded!\n");
+ return 0;
+ }
+ }
+
+ if (unlikely((end - start) >= timeout)) {
+ EC_ERR("SSI-write: Slave %i timed out!\n", slave->ring_position);
+ return -1;
+ }
+ }
+}
+
+/*****************************************************************************/
+
+/**
Bestätigt einen Fehler beim Zustandswechsel.
\todo Funktioniert noch nicht...
@@ -377,6 +458,8 @@
slave->base_fmmu_count, slave->base_sync_count);
EC_INFO(" Slave information interface:\n");
+ EC_INFO(" Configured station alias: 0x%04X (%i)\n", slave->sii_alias,
+ slave->sii_alias);
EC_INFO(" Vendor-ID: 0x%08X, Product code: 0x%08X\n",
slave->sii_vendor_id, slave->sii_product_code);
EC_INFO(" Revision number: 0x%08X, Serial number: 0x%08X\n",
@@ -429,3 +512,4 @@
;;; c-basic-offset:4 ***
;;; End: ***
*/
+