From 0337d198ffe20062678a7900a7666f312c229475 Mon Sep 17 00:00:00 2001
From: Joey Castillo <joeycastillo@utexas.edu>
Date: Thu, 17 Feb 2022 14:28:25 -0500
Subject: [PATCH] SPI test: just read the chip ID

---
 apps/spi-test/{make => }/Makefile |  6 +++---
 apps/spi-test/app.c               | 26 +++++++-------------------
 2 files changed, 10 insertions(+), 22 deletions(-)
 rename apps/spi-test/{make => }/Makefile (68%)

diff --git a/apps/spi-test/make/Makefile b/apps/spi-test/Makefile
similarity index 68%
rename from apps/spi-test/make/Makefile
rename to apps/spi-test/Makefile
index c66ad20..5534c17 100755
--- a/apps/spi-test/make/Makefile
+++ b/apps/spi-test/Makefile
@@ -1,10 +1,10 @@
-TOP = ../../..
+TOP = ../..
 include $(TOP)/make.mk
 
 INCLUDES += \
-  -I../
+  -I./
 
 SRCS += \
-  ../app.c
+  ./app.c
 
 include $(TOP)/rules.mk
diff --git a/apps/spi-test/app.c b/apps/spi-test/app.c
index 006067a..428f55d 100644
--- a/apps/spi-test/app.c
+++ b/apps/spi-test/app.c
@@ -20,16 +20,6 @@ static bool wait_for_flash_ready(void) {
 void app_init(void) {
     spi_flash_init();
     delay_ms(5000);
-
-    uint8_t buf[256] = {0};
-    for(int i = 1; i < 16; i++) {
-        wait_for_flash_ready();
-        watch_set_pin_level(A3, false);
-        spi_flash_command(CMD_ENABLE_WRITE);
-        watch_set_pin_level(A3, true);
-        wait_for_flash_ready();
-        spi_flash_write_data(i * 256, buf, 256);
-    }
 }
 
 void app_wake_from_backup(void) {
@@ -46,18 +36,16 @@ void app_wake_from_standby(void) {
 
 
 bool app_loop(void) {
-    uint8_t buf[4100] = {0};
+    uint8_t buf[3] = {0};
     printf("loop\n");
 
     wait_for_flash_ready();
-    spi_flash_read_data(0, buf, 4100);
-    for(int i = 0; i < 4100; i++) {
-        if (buf[i] > 0) {
-            // should break at "byte 4096 is 255"
-            printf("    byte %d is %d!\n", i, buf[i]);
-            break;
-        }
-    }
+    watch_set_pin_level(A3, false);
+    spi_flash_read_command(CMD_READ_JEDEC_ID, buf, 3);
+    printf("ident: %x, %x, %x\n", buf[0], buf[1], buf[2]);
+
+    watch_set_pin_level(A3, true);
+    wait_for_flash_ready();
 
     delay_ms(10000);