esp_dmx
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someweisguy
Could not find any RDM capable devices
Hi Mitch,
I am using your library to test rdm but I can't find my rdm device. Can you check the code for me, I am using version 4.1.
Thank you.
`#include "esp_dmx.h"
#include "esp_log.h"
#include "rdm/controller.h"
#include "driver/gpio.h"
#define TX_PIN 17 // The DMX transmit pin.
#define RX_PIN 16 // The DMX receive pin.
#define EN_PIN 18 // The DMX transmit enable pin(EN pin).
#define DE_PIN 5 // The DMX transmit enable pin(DE pin).
static const char *TAG = "main";
static uint8_t data[DMX_PACKET_SIZE] = {}; // Buffer to store DMX data
void app_main() {
const dmx_port_t dmx_num = DMX_NUM_1;
dmx_config_t config = DMX_CONFIG_DEFAULT;
const int personality_count = 0;
gpio_set_direction(EN_PIN, GPIO_MODE_OUTPUT);
gpio_set_direction(DE_PIN, GPIO_MODE_OUTPUT);
gpio_set_level(EN_PIN, 0);
gpio_set_level(DE_PIN, 0);
dmx_driver_install(dmx_num, &config, NULL, personality_count);
dmx_set_pin(dmx_num, TX_PIN, RX_PIN, EN_PIN);
dmx_packet_t packet;
int32_t packet_count = 0;
while (true) {
if (dmx_receive(dmx_num, &packet, DMX_TIMEOUT_TICK)) {
ESP_LOGI(TAG, "Start Code: %02x", packet.sc);
if (packet.sc == DMX_SC) {
dmx_read(dmx_num, data, packet.size);
ESP_LOGI(TAG, "Start code: %02x, Size: %i, Packets/second: %i", packet.sc, packet.size, packet_count);
ESP_LOG_BUFFER_HEX(TAG, data, 64); // Log first 64 bytes
} else if (packet.sc == RDM_SC) {
rdm_uid_t uids[32];
size_t devices_found = rdm_discover_devices_simple(dmx_num, uids, 32);
if (devices_found) {
// Print the UID of each device found
for (int i = 0; i < devices_found; ++i) {
ESP_LOGI(TAG, "Device %i has UID " UIDSTR, i, UID2STR(uids[i]));
const rdm_uid_t *dest_uid = &uids[i];
const rdm_sub_device_t sub_device = RDM_SUB_DEVICE_ROOT;
rdm_ack_t ack;
// Get the device info
rdm_device_info_t device_info;
if (rdm_send_get_device_info(dmx_num, dest_uid, sub_device, &device_info,
&ack)) {
ESP_LOGI(TAG,
"DMX Footprint: %i, Sub-device count: %i, Sensor count: %i",
device_info.footprint, device_info.sub_device_count,
device_info.sensor_count);
}
// Get the software version label
char sw_label[33];
size_t sw_label_size = sizeof(sw_label);
if (rdm_send_get_software_version_label(dmx_num, dest_uid, sub_device,
sw_label, sw_label_size, &ack)) {
ESP_LOGI(TAG, "Software version label: %s", sw_label);
}
// Get and set the identify state
bool identify;
if (rdm_send_get_identify_device(dmx_num, dest_uid, sub_device, &identify,
&ack)) {
ESP_LOGI(TAG, UIDSTR " %s identifying.", UID2STR(*dest_uid),
identify ? "is" : "is not");
identify = !identify;
if (rdm_send_set_identify_device(dmx_num, dest_uid, sub_device,
identify, &ack)) {
ESP_LOGI(TAG, UIDSTR " %s identifying.", UID2STR(*dest_uid),
identify ? "is" : "is not");
}
}
// Get and set the DMX start address
uint16_t dmx_start_address = 0;
if (rdm_send_get_dmx_start_address(dmx_num, dest_uid, sub_device,
&dmx_start_address, &ack)) {
ESP_LOGI(TAG, "DMX start address is %i", dmx_start_address);
++dmx_start_address;
if (dmx_start_address > 512) {
dmx_start_address = 1;
}
if (rdm_send_set_dmx_start_address(dmx_num, dest_uid, sub_device,
dmx_start_address, &ack)) {
ESP_LOGI(TAG, "DMX address has been set to %i", dmx_start_address);
}
}
}
} else {
ESP_LOGE(TAG, "Could not find any RDM capable devices.");
}
}
}
}
}
`
this is log:
`I (280) heap_init: Initializing. RAM available for dynamic allocation:
I (287) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM
I (293) heap_init: At 3FFB2CE0 len 0002D320 (180 KiB): DRAM
I (299) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM
I (306) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (312) heap_init: At 4008CC40 len 000133C0 (76 KiB): IRAM
I (319) spi_flash: detected chip: generic
I (323) spi_flash: flash io: qio
I (327) app_start: Starting scheduler on CPU0
I (332) app_start: Starting scheduler on CPU1
I (332) main_task: Started on CPU0
I (342) main_task: Calling app_main()
I (452) main: Start Code: 00
I (452) main: Start code: 00, Size: 513, Packets/second: 0
I (452) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (452) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (462) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (472) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (502) main: Start Code: 00
I (502) main: Start code: 00, Size: 513, Packets/second: 0
I (502) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (502) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (512) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (522) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (552) main: Start Code: 00
I (552) main: Start code: 00, Size: 513, Packets/second: 0
I (552) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (552) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (562) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (572) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (602) main: Start Code: 00
I (602) main: Start code: 00, Size: 513, Packets/second: 0
I (602) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (602) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (612) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (622) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (652) main: Start Code: 00
I (652) main: Start code: 00, Size: 513, Packets/second: 0
I (652) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (652) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (662) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (672) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (702) main: Start Code: 00
I (702) main: Start code: 00, Size: 513, Packets/second: 0
I (702) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (702) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (712) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (722) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (752) main: Start Code: 00
I (752) main: Start code: 00, Size: 513, Packets/second: 0
I (752) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (752) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (762) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (772) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (802) main: Start Code: 00
I (802) main: Start code: 00, Size: 513, Packets/second: 0
I (802) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (802) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (812) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (822) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (852) main: Start Code: 00
I (852) main: Start code: 00, Size: 513, Packets/second: 0
I (852) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (852) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (862) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (872) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (902) main: Start Code: 00
I (902) main: Start code: 00, Size: 513, Packets/second: 0
I (902) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (902) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (912) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (922) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (952) main: Start Code: 00
I (952) main: Start code: 00, Size: 513, Packets/second: 0
I (952) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (952) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (962) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (972) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1002) main: Start Code: 00
I (1002) main: Start code: 00, Size: 513, Packets/second: 0
I (1002) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1002) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1012) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1022) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1052) main: Start Code: 00
I (1052) main: Start code: 00, Size: 513, Packets/second: 0
I (1052) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1052) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1062) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1072) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1102) main: Start Code: 00
I (1102) main: Start code: 00, Size: 513, Packets/second: 0
I (1102) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1102) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1112) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1122) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1152) main: Start Code: 00
I (1152) main: Start code: 00, Size: 513, Packets/second: 0
I (1152) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1152) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1162) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1172) main: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
I (1222) main: Start Code: cc
E (1242) main: Could not find any RDM capable devices.
I (1252) main: Start Code: cc
E (1272) main: Could not find any RDM capable devices.
I (1282) main: Start Code: cc
E (1302) main: Could not find any RDM capable devices.
I (1312) main: Start Code: cc
E (1332) main: Could not find any RDM capable devices.
I (1352) main: Start Code: cc
E (1362) main: Could not find any RDM capable devices.`
Hi - I appreciate your patience. Looking at your code, I believe the issue is that you are calling the RDM discovery function inside an if-else statement of dmx_receive(dmx_num, &packet, DMX_TIMEOUT_TICK). Because you are building an RDM controller, the call to dmx_receive() should never return with a received packet. In other words, if you remove the dmx_receive() logic, you should be able to discover RDM devices.
Let me know if that is helpful, and if I can clarify anything!
