From 8382b3bca6ccba90e8ab62a8434f8f03eb9f7c4d Mon Sep 17 00:00:00 2001
From: martinberlin <martin@luckycloud.de>
Date: Mon, 19 Apr 2021 20:16:57 +0200
Subject: [PATCH] #39 Target C3: dma

---
 components/CalEPD/CMakeLists.txt                  | 10 +++++-----
 components/CalEPD/epd4spi.cpp                     |  2 +-
 components/CalEPD/epdspi.cpp                      | 14 +++++++-------
 .../CalEPD/models/plasticlogic/epdspi2cs.cpp      | 15 ++++++++++-----
 4 files changed, 23 insertions(+), 18 deletions(-)

diff --git a/components/CalEPD/CMakeLists.txt b/components/CalEPD/CMakeLists.txt
index 9662b03..a7d55aa 100644
--- a/components/CalEPD/CMakeLists.txt
+++ b/components/CalEPD/CMakeLists.txt
@@ -34,9 +34,9 @@ set(srcs
     "models/plasticlogic/plasticlogic031.cpp"
 
     # Parallel epapers supported by Epdiy driver (Uncomment epdParallel & REQUIRES "epd_driver")
-    #"models/parallel/ED047TC1.cpp"
-    #"models/parallel/ED047TC1touch.cpp"
-    #"models/parallel/ED060SC4.cpp"
+    "models/parallel/ED047TC1.cpp"
+    "models/parallel/ED047TC1touch.cpp"
+    "models/parallel/ED060SC4.cpp"
 
     # Pending for more testing:
     "models/gdeh0213b73.cpp"
@@ -46,7 +46,7 @@ set(srcs
     "epdspi.cpp"
     "epd4spi.cpp"
     # Only for parallel epapers:
-    #"epdParallel.cpp"
+    "epdParallel.cpp"
     )
 
 # If the project does not use a touch display component FT6X36-IDF can be removed or #commented
@@ -54,6 +54,6 @@ idf_component_register(SRCS ${srcs}
                     REQUIRES "Adafruit-GFX"
                     REQUIRES "FT6X36-IDF"
                     # Only for parallel epapers:
-                    #REQUIRES "epd_driver"
+                    REQUIRES "epd_driver"
                     INCLUDE_DIRS "include"
 )
diff --git a/components/CalEPD/epd4spi.cpp b/components/CalEPD/epd4spi.cpp
index 69a9b93..9a806fd 100644
--- a/components/CalEPD/epd4spi.cpp
+++ b/components/CalEPD/epd4spi.cpp
@@ -14,7 +14,7 @@
 #elif defined CONFIG_IDF_TARGET_ESP32C3
     // chip only support spi dma channel auto-alloc
     #define EPD_HOST    SPI2_HOST
-    #define DMA_CHAN    0
+    #define DMA_CHAN    SPI_DMA_CH_AUTO
 #endif
 /** DISPLAYS REF:
 __________
diff --git a/components/CalEPD/epdspi.cpp b/components/CalEPD/epdspi.cpp
index d9328d1..975f8e7 100644
--- a/components/CalEPD/epdspi.cpp
+++ b/components/CalEPD/epdspi.cpp
@@ -14,14 +14,14 @@
 #elif defined CONFIG_IDF_TARGET_ESP32C3
     // chip only support spi dma channel auto-alloc
     #define EPD_HOST    SPI2_HOST
-    #define DMA_CHAN    0
+    #define DMA_CHAN    SPI_DMA_CH_AUTO
 #endif
 
 void EpdSpi::init(uint8_t frequency=4,bool debug=false){
     debug_enabled = debug;
-    if (debug) {
-        printf("MOSI: %d CLK: %d\nSPI_CS: %d DC: %d RST: %d BUSY: %d\n\n", CONFIG_EINK_SPI_MOSI, CONFIG_EINK_SPI_CLK,
-        CONFIG_EINK_SPI_CS,CONFIG_EINK_DC,CONFIG_EINK_RST,CONFIG_EINK_BUSY);
+    if (true) {
+        printf("MOSI: %d CLK: %d\nSPI_CS: %d DC: %d RST: %d BUSY: %d DMA_CH: %d\n\n", CONFIG_EINK_SPI_MOSI, CONFIG_EINK_SPI_CLK,
+        CONFIG_EINK_SPI_CS,CONFIG_EINK_DC,CONFIG_EINK_RST,CONFIG_EINK_BUSY, DMA_CHAN);
     }
     //Initialize GPIOs direction & initial states
     gpio_set_direction((gpio_num_t)CONFIG_EINK_SPI_CS, GPIO_MODE_OUTPUT);
@@ -91,7 +91,7 @@ void EpdSpi::cmd(const uint8_t cmd)
 {
     if (debug_enabled) {
         printf("C %x\n",cmd);
-    }
+    } 
 
     esp_err_t ret;
     spi_transaction_t t;
@@ -110,9 +110,9 @@ void EpdSpi::cmd(const uint8_t cmd)
 
 void EpdSpi::data(uint8_t data)
 {
-    if (debug_enabled) {
+    /* if (debug_enabled) {
       printf("D %x\n",data);
-    }
+    } */
     esp_err_t ret;
     spi_transaction_t t;
     memset(&t, 0, sizeof(t));       //Zero out the transaction
diff --git a/components/CalEPD/models/plasticlogic/epdspi2cs.cpp b/components/CalEPD/models/plasticlogic/epdspi2cs.cpp
index a4c00a1..04aa2d4 100644
--- a/components/CalEPD/models/plasticlogic/epdspi2cs.cpp
+++ b/components/CalEPD/models/plasticlogic/epdspi2cs.cpp
@@ -5,12 +5,17 @@
 #include "esp_log.h"
 
 #ifdef CONFIG_IDF_TARGET_ESP32
-#define EPD_HOST    HSPI_HOST
-#define DMA_CHAN    2
+    #define EPD_HOST    HSPI_HOST
+    #define DMA_CHAN    2
 
-#elif defined CONFIG_IDF_TARGET_ESP32S2 || defined CONFIG_IDF_TARGET_ESP32C3
-#define EPD_HOST    SPI2_HOST
-#define DMA_CHAN    EPD_HOST
+#elif defined CONFIG_IDF_TARGET_ESP32S2
+    #define EPD_HOST    SPI2_HOST
+    #define DMA_CHAN    EPD_HOST
+    
+#elif defined CONFIG_IDF_TARGET_ESP32C3
+    // chip only support spi dma channel auto-alloc
+    #define EPD_HOST    SPI2_HOST
+    #define DMA_CHAN    SPI_DMA_DISABLED
 #endif