From 621d39437ae66951ebfcc13ecc66704efe356c00 Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.de>
Date: Sat, 23 Dec 2023 16:44:12 +0100
Subject: Driver: Add basic remote control

---
 driver_fw/Makefile   |   4 +-
 driver_fw/src/main.c | 123 +++++++++++++++++++++++++++++++++++----------------
 2 files changed, 86 insertions(+), 41 deletions(-)

diff --git a/driver_fw/Makefile b/driver_fw/Makefile
index fb4be18..9afcbb5 100644
--- a/driver_fw/Makefile
+++ b/driver_fw/Makefile
@@ -9,7 +9,7 @@ MUSL_DIR			?= upstream/musl
 # Algorithm parameters
 ########################################################################################################################
 
-# - none -
+DRIVER_ADDR		?= 0
 
 ########################################################################################################################
 # High-level build parameters
@@ -91,7 +91,7 @@ CFLAGS			+= -fno-common -ffunction-sections -fdata-sections
 
 COMMON_CFLAGS	+= -O$(OPT) -std=gnu2x -g
 COMMON_CFLAGS 	+= $(DEVICE_DEFINES)
-COMMON_CFLAGS 	+= -DDEBUG=$(DEBUG)
+COMMON_CFLAGS 	+= -DDEBUG=$(DEBUG) -DDRIVER_ADDR=$(DRIVER_ADDR)
 
 GEN_HEADERS 	:= $(BUILDDIR)/generated/waveform_tables.h
 
diff --git a/driver_fw/src/main.c b/driver_fw/src/main.c
index ba3ddb8..866cde5 100644
--- a/driver_fw/src/main.c
+++ b/driver_fw/src/main.c
@@ -36,9 +36,37 @@ static union tx_buf_union *tx_buf_write = &tx_buf[2];
 static bool idle_buf_ready = false;
 
 void update_tx_buf(void);
+int hex_to_int(char *hex, size_t len);
+
+int hex_to_int(char *hex, size_t len) {
+    int rv = 0;
+    while (len--) {
+        rv = rv<<4;
+        char c = hex[len];
+        if ('0' <= c && c <= '9')
+            c -= '0';
+        else if ('a' <= c && c <= 'f')
+            c -= 'a' + 0xa;
+        else if ('A' <= c && c <= 'F')
+            c -= 'A' + 0xa;
+        else
+            c = 0;
+        rv |= c;
+    }
+    return rv;
+}
 
-char usartbuf[256];
-int usartp = 0;
+enum leds {
+    LED_ON = 1,
+    LED_PING = 2,
+    LED_OVERHEAT = 4,
+    LED_CONTROL_ERR = 8,
+    LED_INPUT_ERR = 16,
+    LED_OUTPUT_ERR = 32
+};
+
+char rxbuf[256];
+size_t rxp = 0;
 
 int main(void) {
     /* Configure clocks for 64 MHz system clock.
@@ -160,7 +188,12 @@ int main(void) {
     GPIOD->MODER = IN(0) | IN(1) | IN(2) | IN(3) | IN(4) | IN(5) | IN(6) |
         IN(8) | IN(9);
 
-    delay_us(5*1000*1000);
+    for (int i=0; i<20; i++) {
+        set_status_leds(LED_ON);
+        delay_us(500*1000);
+        set_status_leds(0);
+        delay_us(500*1000);
+    }
 
     TIM1->CCMR1 = (6<<TIM_CCMR1_OC2M_Pos) | TIM_CCMR1_OC2PE;
     TIM1->CCMR2 = (6<<TIM_CCMR2_OC3M_Pos) | TIM_CCMR2_OC3PE;
@@ -194,48 +227,60 @@ int main(void) {
     USART1->BRR = 6667; /* Set baudrate to 9600 Bd */
     USART1->CR1 |= USART_CR1_UE; /* And... go! */
 
-    int i = 0;
-    int j = 0;
-    int k = 0;
-    int n = 0;
+    int rj45_rx_ctr = 0;
+    int ping_ctr = 0;
+    int control_err_ctr = 0;
     while (23) {
-        if (USART1->ISR & USART_ISR_RXNE_RXFNE) {
-            usartbuf[usartp] = USART1->RDR;
-            usartp ++;
-            if (usartp >= sizeof(usartbuf)) {
-                usartp = 0;
-            }
+        if (rj45_rx_ctr) {
+            set_rj45_leds(0x5);
+            rj45_rx_ctr--;
+
+        } else {
+            set_rj45_leds(0x0);
         }
-    }
 
-    {
-        i++;
-        j++;
-        i %= 6;
-        j %= 4;
-        delay_us(100000);
-        set_rj45_leds(1 << j);
-        set_status_leds(0x01);
-        if (i == 0) {
-            k++;
-            if (k == 10) {
-                k = 0;
-                n++;
-                if (n == 16) {
-                    n = 0;
+        int leds = LED_ON;
+        if (ping_ctr) {
+            leds |= LED_PING;
+            ping_ctr--;
+        }
+        if (control_err_ctr) {
+            leds |= LED_CONTROL_ERR;
+            control_err_ctr--;
+        }
+        set_status_leds(leds);
+
+        if (USART1->ISR & USART_ISR_RXNE_RXFNE) {
+            rj45_rx_ctr = 100000;
+            if (USART1->RDR == '\n') {
+                if (rxp != 4*16*3) {
+                    rxp = 0;
+                    control_err_ctr = 10000000;
+                    continue;
                 }
-            }
 
-            uint8_t b = (k < 8) ? (1<<k) : ~(1<<(k-8));
-            
-            memset(tx_buf_write, 0, sizeof(*tx_buf_write));
-            for (size_t i=0; i<COUNT_OF(tx_buf_write->packet.channels); i++) {
-                tx_buf_write->packet.channels[i] = (k < 9) ? (1<<k) : 0xff;
-            }
-            for (size_t i=0; i<COUNT_OF(tx_buf_write->packet.brightness); i++) {
-                tx_buf_write->packet.brightness[i] = 0xff; //(n<<4) | n;
+                for (size_t i=0; i<16; i++) {
+                    int brightness = hex_to_int(&rxbuf[DRIVER_ADDR*16*3 + i*3], 1);
+                    int channels = hex_to_int(&rxbuf[DRIVER_ADDR*16*3 + i*3 + 1], 2);
+
+                    tx_buf_write->packet.channels[i] = channels;
+
+                    if ((i&1) == 0) {
+                        tx_buf_write->packet.brightness[i>>1] = brightness;
+                    } else {
+                        tx_buf_write->packet.brightness[i>>1] |= brightness<<4;
+                    }
+                }
+                rxp = 0;
+                ping_ctr = 1000000;
+                update_tx_buf();
+
+            } else {
+                if (rxp <= sizeof(rxbuf)) {
+                    rxbuf[rxp] = USART1->RDR;
+                    rxp ++;
+                }
             }
-            update_tx_buf();
         }
     }
 }
-- 
cgit