From 01bd9cbc6fe64f236a1b467f011e56dcae0306e7 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Fri, 24 Oct 2025 16:55:59 -0400
Subject: table module

---
 fw/main.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

(limited to 'fw/main.c')

diff --git a/fw/main.c b/fw/main.c
index d035a02..3471d79 100644
--- a/fw/main.c
+++ b/fw/main.c
@@ -5,15 +5,94 @@
 
 #include "system.h"
 #include "types.h"
+#include "table.h"
 #include "spi.h"
 #include "eeprom.h"
+#include "dac.h"
 #include "can.h"
 
+// Parameters:
+// Each parameter has an associated CAN ID and calibration table in the EEPROM.
+enum {
+	TACH = 0,
+	SPEED = 1,
+	AN1 = 2,
+	AN2 = 3,
+	AN3 = 4,
+	AN4 = 5,
+} Parameter;
+
+// CAN ID for writing/reading calibration tables from a host PC.
+// LSB of ID, 'X', indicates table and row number: X[7:5]{table #}, X[4:0]{row #}.
+static const CanId tblCanId = {
+	.type = CAN_ID_EXT,
+	.eid = {0x00, 0x2F, 0x27, 0x01}, // 1272F0Xh
+};
+
+// CAN ID for writing/reading the CAN ID associated with each parameter
+// from a host PC.
+// LSB of ID, 'X', indicates a particular Parameter enum.
+static const CanId paramCanId = {
+	.type = CAN_ID_EXT,
+	.eid = {0x10, 0x2F, 0x27, 0x01}, // 1272F1Xh
+};
+
+// Receive buffer 0 mask.
+// RXB0 is used for control messages for reading/writing configuration tables and CAN IDs for each parameter, which are stored in the EEPROM.
+// Mask all but the LSB of the Table and Parameter IDs.
+static const CanId rxb0Mask = {
+	.type = CAN_ID_EXT,
+	.eid = {0x10, 0x2F, 0x27, 0x01}, // 1272F10h
+};
+
+// Calibration tables in EEPROM:
+static Table tachTbl;
+static Table speedTbl;
+static Table an1Tbl;
+static Table an2Tbl;
+static Table an3Tbl;
+
+// Filter ID addresses in EEPROM:
+// Each one of these addresses holds a CanId struct.
+static U16 id1Addr;
+static U16 id2Addr;
+static U16 id3Addr;
+static U16 id4Addr;
+static U16 id5Addr;
+
 void
 main(void) {
+	U16 offset;
+
+	// Initialize calibration table EEPROM addresses
+	offset = (U16){0u, 0u};
+	tachTbl = (Table){offset};
+	offset = addU16U8(offset, TAB_SIZE);
+	speedTbl = (Table){offset};
+	offset = addU16U8(offset, TAB_SIZE);
+	an1Tbl = (Table){offset};
+	offset = addU16U8(offset, TAB_SIZE);
+	an2Tbl = (Table){offset};
+	offset = addU16U8(offset, TAB_SIZE);
+	an3Tbl = (Table){offset};
+	offset = addU16U8(offset, TAB_SIZE);
+
+	// Initialize filter ID EEPROM addresses
+	id1Addr = offset;
+	offset = addU16U8(offset, sizeof(CanId));
+	id2Addr = offset;
+	offset = addU16U8(offset, sizeof(CanId));
+	id3Addr = offset;
+	offset = addU16U8(offset, sizeof(CanId));
+	id4Addr = offset;
+	offset = addU16U8(offset, sizeof(CanId));
+	id5Addr = offset;
+	offset = addU16U8(offset, sizeof(CanId));
+
 	sysInit();
 	spiInit();
 	eepromInit();
+	dacInit();
 	canInit();
 
 	for (;;) {
-- 
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