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Seems to sort of work.

This commit is contained in:
Philip Gladstone 2021-10-16 22:38:07 +00:00
parent 2cf72b4f8b
commit 4a55397778
1 changed files with 81 additions and 18 deletions
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99
components/modules/ble.c
View File

@ -46,6 +46,8 @@
#include "nimble/ble.h"
#include "task/task.h"
#define PERROR() printf("pcall failed: %s\n", lua_tostring(L, -1))
static int lble_start_advertising();
static int lble_gap_event(struct ble_gap_event *event, void *arg);
@ -737,6 +739,8 @@ static int
lble_access_cb(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg) {
// Actually the only thing we care about is the arg and the ctxt
printf("access_cb called with op %d\n", ctxt->op);
size_t task_block_size = sizeof(task_block_t);
if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
@ -762,21 +766,25 @@ lble_access_cb(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_acces
return BLE_ATT_ERR_UNLIKELY;
}
}
printf("ABout to task_post\n");
if (!task_post(TASK_PRIORITY_HIGH, task_handle, (task_param_t) task_block)) {
free(task_block);
return BLE_ATT_ERR_UNLIKELY;
}
response_message_t *message;
response_message_t message;
while (1) {
printf("About to receive\n");
if (xQueueReceive(response_queue, &message, (TickType_t) (10000/portTICK_PERIOD_MS) ) != pdPASS) {
free(task_block);
return BLE_ATT_ERR_UNLIKELY;
}
if (message->seqno == task_block->seqno) {
if (message.seqno == task_block->seqno) {
break;
}
}
@ -784,17 +792,17 @@ lble_access_cb(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_acces
int rc = BLE_ATT_ERR_UNLIKELY;
if (ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR) {
rc = message->errcode;
rc = message.errcode;
if (rc == 0) {
if (os_mbuf_append(ctxt->om, message->buffer, message->length)) {
if (os_mbuf_append(ctxt->om, message.buffer, message.length)) {
rc = BLE_ATT_ERR_INSUFFICIENT_RES;
}
}
} else if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
rc = message->errcode;
rc = message.errcode;
}
free(message->buffer);
free(message.buffer);
free(task_block);
return rc;
@ -811,7 +819,7 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
lua_State *L = lua_getstate();
lua_rawgeti(L, LUA_REGISTRYINDEX, (int) task_block->arg);
// Now we have the characteristic table in -1
lua_getfield(L, -1, "struct");
lua_getfield(L, -1, "type");
// -1 is the struct mapping (if any), -2 is the table
if (task_block->ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR) {
@ -821,6 +829,7 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
lua_pushvalue(L, -3); // dup the table onto the top
if (lua_pcall(L, 1, 1, 0)) {
// error.
PERROR();
message.errcode = BLE_ATT_ERR_UNLIKELY;
lua_pop(L, 1);
goto cleanup;
@ -832,23 +841,26 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
// Now we have the value (-1), struct (-2), table (-3)
if (!lua_isnoneornil(L, -2)) {
// need to convert value
printf("About to convert vaclue for read\n");
if (!lua_istable(L, -1)) {
// wrap it in a table
lua_createtable(L, 1, 0);
lua_pushvalue(L, -2); // Now have value, table, value, struct, table
lua_rawseti(L, -2, 1);
lua_remove(L, -2); // now have table, struct, chr table
printf("wrapped in table\n");
}
// Now call struct.pack
// The arguments are the format string, and then the values
lua_rawgeti(L, LUA_REGISTRYINDEX, struct_pack_index);
lua_pushvalue(L, -3); // dup the format
int nv = lua_rawlen(L, -5);
for (int i = 1; i < nv; i++) {
lua_rawgeti(L, -4 - i, i);
int nv = lua_rawlen(L, -3);
for (int i = 1; i <= nv; i++) {
lua_rawgeti(L, -2 - i, i);
}
if (lua_pcall(L, nv + 1, 1, 0)) {
PERROR();
message.errcode = BLE_ATT_ERR_UNLIKELY;
lua_pop(L, 2);
goto cleanup;
@ -868,6 +880,7 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
}
}
lua_pop(L, 1);
message.errcode = 0;
}
if (task_block->ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
// Push the value
@ -879,16 +892,19 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
lua_createtable(L, 0, 0);
int stack_size = lua_gettop(L);
lua_rawgeti(L, LUA_REGISTRYINDEX, struct_unpack_index);
lua_pushvalue(L, -3); // dup the format
lua_pushvalue(L, -3); // dup the string
lua_pushvalue(L, -4); // dup the format
lua_pushvalue(L, -4); // dup the string
if (lua_pcall(L, 2, LUA_MULTRET, 0)) {
PERROR();
message.errcode = BLE_ATT_ERR_UNLIKELY;
lua_pop(L, 2);
goto cleanup;
}
int vals = lua_gettop(L) - stack_size;
printf("unpacked %d vals\n", vals - 1);
for (int i = 1; i <= vals; i++) {
// Note that the last entry is actually the string offset
for (int i = 1; i < vals; i++) {
lua_pushvalue(L, -(vals - i + 1));
lua_rawseti(L, -(vals + 2), i);
}
@ -906,6 +922,7 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
if (!lua_isnoneornil(L, -1)) {
lua_pushvalue(L, -2); // the values table
if (lua_pcall(L, 1, 0, 0)) {
PERROR();
message.errcode = BLE_ATT_ERR_UNLIKELY;
lua_pop(L, 2);
goto cleanup;
@ -914,9 +931,11 @@ lble_task_cb(task_param_t param, task_prio_t prio) {
lua_pop(L, 1); // Throw away the null write pointer
// just save the result in the value
lua_setfield(L, -3, "value");
message.errcode = 0;
}
cleanup:
printf("Returning code %d\n", message.errcode);
lua_pop(L, 2);
message.seqno = task_block->seqno;
@ -930,7 +949,12 @@ lble_build_gatt_svcs(lua_State *L, struct ble_gatt_svc_def **resultp) {
// + number of characteristics (nc) + ns * sizeof(ble_gatt_chr_def)
// + ns + nc * sizeof(ble_uuid_any_t)
printf("build_gatt_svcs\n");
lua_getfield(L, 1, "services");
if (!lua_istable(L, -1)) {
return luaL_error(L, "services entry must be a table");
}
int ns = lua_rawlen(L, -1);
// -1 is the services list
@ -953,7 +977,7 @@ lble_build_gatt_svcs(lua_State *L, struct ble_gatt_svc_def **resultp) {
int size = (ns + 1) * sizeof(struct ble_gatt_svc_def) + (nc + ns) * sizeof(struct ble_gatt_chr_def) + (ns + nc) * sizeof(ble_uuid_any_t);
printf("Computed size: %d\n", size);
printf("Computed size: %d (nc %d, ns %d)\n", size, nc, ns);
struct ble_gatt_svc_def *svcs = malloc(size);
if (!svcs) {
@ -974,7 +998,7 @@ lble_build_gatt_svcs(lua_State *L, struct ble_gatt_svc_def **resultp) {
// -1 is now the service which should be a table. It must have a uuid
lua_getfield(L, -1, "uuid");
// Convert the uuid
if ((void *) (uuids + 1) >= eom) {
if ((void *) (uuids + 1) > eom) {
free_gatt_svcs(L, result);
return luaL_error(L, "Miscalculated memory requirements");
}
@ -998,7 +1022,7 @@ lble_build_gatt_svcs(lua_State *L, struct ble_gatt_svc_def **resultp) {
// -1 is now the characteristic
lua_getfield(L, -1, "uuid");
// Convert the uuid
if ((void *) (uuids + 1) >= eom) {
if ((void *) (uuids + 1) > eom) {
free_gatt_svcs(L, result);
return luaL_error(L, "Miscalculated memory requirements");
}
@ -1045,7 +1069,10 @@ static int
gatt_svr_init(lua_State *L) {
int rc;
printf("about to call gap_init\n");
ble_svc_gap_init();
printf("about to call gatt_init\n");
ble_svc_gatt_init();
// Now we have to build the gatt_svr_svcs data structure
@ -1057,6 +1084,7 @@ gatt_svr_init(lua_State *L) {
gatt_svr_svcs = svcs;
printf("about to call count_cfg\n");
rc = ble_gatts_count_cfg(gatt_svr_svcs);
if (rc != 0) {
return luaL_error(L, "Failed to count gatts: %d", rc);
@ -1067,6 +1095,8 @@ gatt_svr_init(lua_State *L) {
return luaL_error(L, "Failed to add gatts: %d", rc);
}
ble_gatts_start();
return 0;
}
@ -1328,6 +1358,38 @@ lble_on_sync(void)
lble_start_advertising();
}
void
gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg)
{
char buf[BLE_UUID_STR_LEN];
switch (ctxt->op) {
case BLE_GATT_REGISTER_OP_SVC:
MODLOG_DFLT(DEBUG, "registered service %s with handle=%d\n",
ble_uuid_to_str(ctxt->svc.svc_def->uuid, buf),
ctxt->svc.handle);
break;
case BLE_GATT_REGISTER_OP_CHR:
MODLOG_DFLT(DEBUG, "registering characteristic %s with "
"def_handle=%d val_handle=%d\n",
ble_uuid_to_str(ctxt->chr.chr_def->uuid, buf),
ctxt->chr.def_handle,
ctxt->chr.val_handle);
break;
case BLE_GATT_REGISTER_OP_DSC:
MODLOG_DFLT(DEBUG, "registering descriptor %s with handle=%d\n",
ble_uuid_to_str(ctxt->dsc.dsc_def->uuid, buf),
ctxt->dsc.handle);
break;
default:
assert(0);
break;
}
}
static int lble_init(lua_State *L) {
if (!struct_pack_index) {
@ -1341,6 +1403,7 @@ static int lble_init(lua_State *L) {
// Passed the config table
luaL_checktype(L, 1, LUA_TTABLE);
printf("About to init_stack");
lble_init_stack(L);
lua_getfield(L, 1, "name");
@ -1354,8 +1417,8 @@ static int lble_init(lua_State *L) {
/* Initialize the NimBLE host configuration. */
// ble_hs_cfg.reset_cb = bleprph_on_reset;
ble_hs_cfg.sync_cb = lble_on_sync;
// ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb;
// ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
ble_hs_cfg.gatts_register_cb = gatt_svr_register_cb;
ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
rc = gatt_svr_init(L);
if (rc) {