From 164c402d1ca9efc47f2b8c06ab453100b5fcf00d Mon Sep 17 00:00:00 2001
From: "Ben V. Brown" <Ralim@Ralimtek.com>
Date: Wed, 22 Jul 2020 22:33:18 +1000
Subject: [PATCH] Update I2CBB.cpp

---
 workspace/TS100/Core/BSP/Miniware/I2CBB.cpp | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/workspace/TS100/Core/BSP/Miniware/I2CBB.cpp b/workspace/TS100/Core/BSP/Miniware/I2CBB.cpp
index 27ce6811..88ec616d 100644
--- a/workspace/TS100/Core/BSP/Miniware/I2CBB.cpp
+++ b/workspace/TS100/Core/BSP/Miniware/I2CBB.cpp
@@ -13,7 +13,7 @@
 #define SDA_LOW() 	HAL_GPIO_WritePin(SDA2_GPIO_Port, SDA2_Pin, GPIO_PIN_RESET)
 #define SDA_READ()  (HAL_GPIO_ReadPin(SDA2_GPIO_Port,SDA2_Pin)==GPIO_PIN_SET?1:0)
 #define SCL_READ()  (HAL_GPIO_ReadPin(SCL2_GPIO_Port,SCL2_Pin)==GPIO_PIN_SET?1:0)
-#define I2C_DELAY() {for(int xx=0;xx<1000;xx++){asm("nop");}}
+#define I2C_DELAY() {for(int xx=0;xx<20;xx++){asm("nop");}}
 SemaphoreHandle_t I2CBB::I2CSemaphore = NULL;
 StaticSemaphore_t I2CBB::xSemaphoreBuffer;
 SemaphoreHandle_t I2CBB::I2CSemaphore2 = NULL;
@@ -34,10 +34,11 @@ void I2CBB::init() {
 	unlock();
 	unlock2();
 	//unstick bus
-	for (int i = 0; i < 8; i++) {
-		read_bit();
-	}
-	stop();
+//	start();
+//	for (int i = 0; i < 8; i++) {
+//		read_bit();
+//	}
+//	stop();
 }
 
 bool I2CBB::probe(uint8_t address) {
@@ -64,6 +65,9 @@ bool I2CBB::Mem_Read(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pData,
 		unlock();
 		return false;
 	}
+	SCL_LOW();
+	I2C_DELAY();
+//	stop();
 	start();
 	ack = send(DevAddress | 1);
 	if (!ack) {
@@ -234,7 +238,7 @@ bool I2CBB::send(uint8_t value) {
 	}
 
 	SDA_HIGH();
-	bool ack = read_bit() == 0;
+	bool ack = (read_bit() == 0);
 	return ack;
 }