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remove uneccessary workaround, compensate for interrupt length

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This commit is contained in:
Harald Barth 2021-11-14 15:35:26 +01:00
parent 71117bc7a1
commit 10209ed6f3
2 changed files with 20 additions and 9 deletions
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27
DCCRMT.cpp
View File

@ -20,8 +20,9 @@
#include "defines.h"
#include "DIAG.h"
#include "DCCRMT.h"
#include "soc/periph_defs.h"
#include "driver/periph_ctrl.h"
//#include "soc/periph_defs.h"
//#include "driver/periph_ctrl.h"
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4,2,0)
#error wrong IDF version
@ -41,6 +42,13 @@ void setDCCBit0(rmt_item32_t* item) {
item->duration1 = DCC_0_HALFPERIOD;
}
void setDCCBit0Last(rmt_item32_t* item) {
item->level0 = 1;
item->duration0 = DCC_0_HALFPERIOD + DCC_0_HALFPERIOD/10;
item->level1 = 0;
item->duration1 = DCC_0_HALFPERIOD;
}
void setEOT(rmt_item32_t* item) {
item->val = 0;
}
@ -56,9 +64,9 @@ RMTPin::RMTPin(byte pin, byte ch, byte plen) {
preambleLen = plen+2; // plen 1 bits, one 0 bit and one EOF marker
preamble = (rmt_item32_t*)malloc(preambleLen*sizeof(rmt_item32_t));
for (byte n=0; n<plen; n++)
setDCCBit1(preamble + n); // preamble bits
setDCCBit0(preamble + plen); // start of packet 0 bit
setEOT(preamble + plen + 1); // EOT marker
setDCCBit1(preamble + n); // preamble bits
setDCCBit0Last(preamble + plen); // start of packet 0 bit
setEOT(preamble + plen + 1); // EOT marker
// idle
idleLen = 29;
@ -70,7 +78,7 @@ RMTPin::RMTPin(byte pin, byte ch, byte plen) {
for (byte n=18; n<26; n++) // 18 to 25
setDCCBit1(idle + n);
setDCCBit1(idle + 26); // end bit
setDCCBit0(idle + 27); // finish always with 0
setDCCBit0Last(idle + 27); // finish always with 0
setEOT(idle + 28); // EOT marker
rmt_config_t config;
@ -83,8 +91,11 @@ RMTPin::RMTPin(byte pin, byte ch, byte plen) {
config.mem_block_num = 1; // With MAX_PACKET_SIZE = 5 and number of bits needed
// MAX_PACKET_SIZE+1 * 8 + MAX_PACKET_SIZE = 54 one
// mem block of 64 RMT items (=DCC bits) should be enough
periph_module_disable(PERIPH_RMT_MODULE);
periph_module_enable(PERIPH_RMT_MODULE);
// this was not our problem https://esp32.com/viewtopic.php?t=5252
//periph_module_disable(PERIPH_RMT_MODULE);
//periph_module_enable(PERIPH_RMT_MODULE);
ESP_ERROR_CHECK(rmt_config(&config));
// NOTE: ESP_INTR_FLAG_IRAM is *NOT* included in this bitmask
ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, ESP_INTR_FLAG_LOWMED|ESP_INTR_FLAG_SHARED));

2
GITHUB_SHA.h
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@ -1 +1 @@
#define GITHUB_SHA "ESP32-2021114-14:49"
#define GITHUB_SHA "ESP32-2021114-15:35"