tmedicci opened a new pull request, #17068:
URL: https://github.com/apache/nuttx/pull/17068
## Summary
* risc-v/espressif/rmt: Update common source code functions
- Updates the common source code for the RMT peripheral used by
Espressif's RISC-Vs SoCs. This enables newer SoCs to be supported in the future
while maintaining backwards compatibility.
## Impact
Impact on user: No.
Impact on build: No.
Impact on hardware: Not yet: newer Espressif SoCs can be supported on NuttX
following this change.
Impact on documentation: No.
Impact on security: No.
Impact on compatibility: No. It's totally backwards compatible.
## Testing
Testing can be performed using any of the `rmt` defconfig available for any
of Espressif's RISC-V-based devices (ESP32-C3, ESP32-C6, or ESP32-H2). The
behavior of the rmt peripheral didn't change, and this PR's results are the
same of the results before it. This can be verified:
### Building
#### ESP32-C3
```
make -j distclean && ./tools/configure.sh esp32c3-generic:rmt &&
kconfig-tweak -e DEBUG_ASSERTIONS && kconfig-tweak -e DEBUG_FEATURES &&
kconfig-tweak -e EXPERIMENTAL && kconfig-tweak -e RMT_LOOP_TEST_MODE &&
kconfig-tweak --set-val RMT_DEFAULT_RX_BUFFER_SIZE 512 && make olddefconfig &&
make flash ESPTOOL_PORT=/dev/ttyUSB0 && picocom -b 115200 /dev/ttyUSB0
```
#### ESP32-C6
```
make -j distclean && ./tools/configure.sh esp32c6-devkitc:rmt &&
kconfig-tweak -e DEBUG_ASSERTIONS && kconfig-tweak -e DEBUG_FEATURES &&
kconfig-tweak -e EXPERIMENTAL && kconfig-tweak -e RMT_LOOP_TEST_MODE &&
kconfig-tweak --set-val RMT_DEFAULT_RX_BUFFER_SIZE 512 && make olddefconfig &&
make flash ESPTOOL_PORT=/dev/ttyUSB0 && picocom -b 115200 /dev/ttyUSB0
```
#### ESP32-H2
```
make -j distclean && ./tools/configure.sh esp32h2-devkit:rmt &&
kconfig-tweak -e DEBUG_ASSERTIONS && kconfig-tweak -e DEBUG_FEATURES &&
kconfig-tweak -e EXPERIMENTAL && kconfig-tweak -e RMT_LOOP_TEST_MODE &&
kconfig-tweak --set-val RMT_DEFAULT_RX_BUFFER_SIZE 512 && make olddefconfig &&
make flash ESPTOOL_PORT=/dev/ttyUSB0 && picocom -b 115200 /dev/ttyUSB0
```
### Running
Run `rmtchar` application and check that the received data is equal to the
transmitted data.
### Results
```
nsh> rmtchar
rmtchar_main: Start receiver thread
rmtchar_main: Start transmitter thread
rmtchar_main: Waiting for the transmitter thread
[0]: L 1 D 1000 L 0 D 1000
[1]: L 1 D 1010 L 0 D 1010
[2]: L 1 D 1020 L 0 D 1020
[3]: L 1 D 1030 L 0 D 1030
[4]: L 1 D 1040 L 0 D 1040
[5]: L 1 D 1050 L 0 D 1050
[6]: L 1 D 1060 L 0 D 1060
[7]: L 1 D 1070 L 0 D 1070
[8]: L 1 D 1080 L 0 D 1080
[9]: L 1 D 1090 L 0 D 1090
[10]: L 1 D 1100 L 0 D 1100
[11]: L 1 D 1110 L 0 D 1110
[12]: L 1 D 1120 L 0 D 1120
[13]: L 1 D 1130 L 0 D 1130
[14]: L 1 D 1140 L 0 D 1140
[15]: L 1 D 1150 L 0 D 1150
[16]: L 1 D 1160 L 0 D 1160
[17]: L 1 D 1170 L 0 D 1170
[18]: L 1 D 1180 L 0 D 1180
[19]: L 1 D 1190 L 0 D 1190
[20]: L 1 D 1200 L 0 D 1200
[21]: L 1 D 1210 L 0 D 1210
[22]: L 1 D 1220 L 0 D 1220
[23]: L 1 D 1230 L 0 D 1230
[24]: L 1 D 1240 L 0 D 1240
[25]: L 1 D 1250 L 0 D 1250
[26]: L 1 D 1260 L 0 D 1260
[27]: L 1 D 1270 L 0 D 1270
[28]: L 1 D 1280 L 0 D 1280
[29]: L 1 D 1290 L 0 D 1290
[30]: L 1 D 1300 L 0 D 1300
[31]: L 1 D 1310 L 0 D 1310
[32]: L 1 D 1320 L 0 D 1320
[33]: L 1 D 1330 L 0 D 1330
[34]: L 1 D 1340 L 0 D 1340
[35]: L 1 D 1350 L 0 D 1350
[36]: L 1 D 1360 L 0 D 1360
[37]: L 1 D 1370 L 0 D 1370
[38]: L 1 D 1380 L 0 D 1380
[39]: L 1 D 1390 L 0 D 1390
[40]: L 1 D 1400 L 0 D 1400
[41]: L 1 D 1410 L 0 D 1410
[42]: L 1 D 1420 L 0 D 1420
[43]: L 1 D 1430 L 0 D 1430
[44]: L 1 D 1440 L 0 D 1440
[45]: L 1 D 1450 L 0 D 1450
[46]: L 1 D 1460 L 0 D 1460
[47]: L 1 D 1470 L 0 D 1470
[48]: L 1 D 1480 L 0 D 1480
[49]: L 1 D 1490 L 0 D 1490
[50]: L 1 D 1500 L 0 D 1500
[51]: L 1 D 1510 L 0 D 1510
[52]: L 1 D 1520 L 0 D 1520
[53]: L 1 D 1530 L 0 D 1530
[54]: L 1 D 1540 L 0 D 1540
[55]: L 1 D 1550 L 0 D 1550
[56]: L 1 D 1560 L 0 D 1560
[57]: L 1 D 1570 L 0 D 1570
[58]: L 1 D 1580 L 0 D 1580
[59]: L 1 D 1590 L 0 D 1590
[60]: L 1 D 1600 L 0 D 1600
[61]: L 1 D 1610 L 0 D 1610
[62]: L 1 D 1620 L 0 D 1620
[63]: L 1 D 1630 L 0 D 1630
rmtchar_transmitter: Send buffer with 256 bytes
rmtchar_receiver: Received buffer:
[0]: L 1 D 1000 L 0 D 1000
rmtchar_main: Waiting for the receiver thread
[1]: L 1 D 1010 L 0 D 1010
[2]: L 1 D 1020 L 0 D 1020
[3]: L 1 D 1030 L 0 D 1030
[4]: L 1 D 1040 L 0 D 1040
[5]: L 1 D 1050 L 0 D 1050
[6]: L 1 D 1060 L 0 D 1060
[7]: L 1 D 1070 L 0 D 1070
[8]: L 1 D 1080 L 0 D 1080
[9]: L 1 D 1090 L 0 D 1090
[10]: L 1 D 1100 L 0 D 1100
[11]: L 1 D 1110 L 0 D 1110
[12]: L 1 D 1120 L 0 D 1120
[13]: L 1 D 1130 L 0 D 1130
[14]: L 1 D 1140 L 0 D 1140
[15]: L 1 D 1150 L 0 D 1150
[16]: L 1 D 1160 L 0 D 1160
[17]: L 1 D 1170 L 0 D 1170
[18]: L 1 D 1180 L 0 D 1180
[19]: L 1 D 1190 L 0 D 1190
[20]: L 1 D 1200 L 0 D 1200
[21]: L 1 D 1210 L 0 D 1210
[22]: L 1 D 1220 L 0 D 1220
[23]: L 1 D 1230 L 0 D 1230
[24]: L 1 D 1240 L 0 D 1240
[25]: L 1 D 1250 L 0 D 1250
[26]: L 1 D 1260 L 0 D 1260
[27]: L 1 D 1270 L 0 D 1270
[28]: L 1 D 1280 L 0 D 1280
[29]: L 1 D 1290 L 0 D 1290
[30]: L 1 D 1300 L 0 D 1300
[31]: L 1 D 1310 L 0 D 1310
[32]: L 1 D 1320 L 0 D 1320
[33]: L 1 D 1330 L 0 D 1330
[34]: L 1 D 1340 L 0 D 1340
[35]: L 1 D 1350 L 0 D 1350
[36]: L 1 D 1360 L 0 D 1360
[37]: L 1 D 1370 L 0 D 1370
[38]: L 1 D 1380 L 0 D 1380
[39]: L 1 D 1390 L 0 D 1390
[40]: L 1 D 1400 L 0 D 1400
[41]: L 1 D 1410 L 0 D 1410
[42]: L 1 D 1420 L 0 D 1420
[43]: L 1 D 1430 L 0 D 1430
[44]: L 1 D 1440 L 0 D 1440
[45]: L 1 D 1450 L 0 D 1450
[46]: L 1 D 1460 L 0 D 1460
[47]: L 1 D 1470 L 0 D 1470
[48]: L 1 D 1480 L 0 D 1480
[49]: L 1 D 1490 L 0 D 1490
[50]: L 1 D 1500 L 0 D 1500
[51]: L 1 D 1510 L 0 D 1510
[52]: L 1 D 1520 L 0 D 1520
[53]: L 1 D 1530 L 0 D 1530
[54]: L 1 D 1540 L 0 D 1540
[55]: L 1 D 1550 L 0 D 1550
[56]: L 1 D 1560 L 0 D 1560
[57]: L 1 D 1570 L 0 D 1570
[58]: L 1 D 1580 L 0 D 1580
[59]: L 1 D 1590 L 0 D 1590
[60]: L 1 D 1600 L 0 D 1600
[61]: L 1 D 1610 L 0 D 1610
[62]: L 1 D 1620 L 0 D 1620
[63]: L 1 D 1630 L 0 D 0
```
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