Commit 9e10d915cef4a6eaf54a8ce889a1d3824def64ff
2014-01-03T15:50:32
Add mcp2210 helper functions for getting and setting one GPIO pin val and direction.
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diff --git a/mcp2210.c b/mcp2210.c
index bacfbd5..511d7c6 100644
--- a/mcp2210.c
+++ b/mcp2210.c
@@ -43,6 +43,7 @@ bool mcp2210_send_recv(struct cgpu_info *cgpu, char *buf, enum usb_cmds cmd)
return true;
}
+/* Get all the pinvals */
bool mcp2210_get_gpio_pinvals(struct cgpu_info *cgpu, struct gpio_pin *gp)
{
char buf[MCP2210_BUFFER_LENGTH];
@@ -60,6 +61,7 @@ bool mcp2210_get_gpio_pinvals(struct cgpu_info *cgpu, struct gpio_pin *gp)
return true;
}
+/* Get all the pindirs */
bool mcp2210_get_gpio_pindirs(struct cgpu_info *cgpu, struct gpio_pin *gp)
{
char buf[MCP2210_BUFFER_LENGTH];
@@ -76,3 +78,97 @@ bool mcp2210_get_gpio_pindirs(struct cgpu_info *cgpu, struct gpio_pin *gp)
return true;
}
+
+/* Get one pinval */
+bool mcp2210_get_gpio_pinval(struct cgpu_info *cgpu, int pin, int *val)
+{
+ char buf[MCP2210_BUFFER_LENGTH];
+
+ memset(buf, 0, MCP2210_BUFFER_LENGTH);
+ buf[0] = MCP2210_GET_GPIO_PIN_VAL;
+ if (!mcp2210_send_recv(cgpu, buf, C_MCP_GETGPIOPINVAL))
+ return false;
+
+ buf[0] = MCP2210_GET_GPIO_PIN_VAL;
+
+ if (pin < 8)
+ *val = !!(buf[4] & (0x01u << pin));
+ else
+ *val = !!(buf[5] & 0x01u);
+
+ return true;
+}
+
+/* Set one pinval */
+bool mcp2210_set_gpio_pinval(struct cgpu_info *cgpu, int pin, int val)
+{
+ char buf[MCP2210_BUFFER_LENGTH];
+
+ /* Get the current pin vals first since we're only changing one. */
+ memset(buf, 0, MCP2210_BUFFER_LENGTH);
+ buf[0] = MCP2210_GET_GPIO_PIN_VAL;
+ if (!mcp2210_send_recv(cgpu, buf, C_MCP_GETGPIOPINVAL))
+ return false;
+
+ buf[0] = MCP2210_SET_GPIO_PIN_VAL;
+
+ if (pin < 8) {
+ if (val)
+ buf[4] |= (0x01u << pin);
+ else
+ buf[4] &= ~(0x01u << pin);
+ } else {
+ if (val)
+ buf[5] |= 0x01u;
+ else
+ buf[5] &= ~0x01u;
+ }
+ return mcp2210_send_recv(cgpu, buf, C_MCP_SETGPIOPINVAL);
+}
+
+/* Get one pindir */
+bool mcp2210_get_gpio_pindir(struct cgpu_info *cgpu, int pin, int *dir)
+{
+ char buf[MCP2210_BUFFER_LENGTH];
+
+ memset(buf, 0, MCP2210_BUFFER_LENGTH);
+ buf[0] = MCP2210_GET_GPIO_PIN_DIR;
+ if (!mcp2210_send_recv(cgpu, buf, C_MCP_GETGPIOPINDIR))
+ return false;
+
+ buf[0] = MCP2210_GET_GPIO_PIN_DIR;
+
+ if (pin < 8)
+ *dir = !!(buf[4] & (0x01u << pin));
+ else
+ *dir = !!(buf[5] & 0x01u);
+
+ return true;
+}
+
+/* Set one pindir */
+bool mcp2210_set_gpio_pindir(struct cgpu_info *cgpu, int pin, int dir)
+{
+ char buf[MCP2210_BUFFER_LENGTH];
+
+ /* Get the current pin dirs first since we're only changing one. */
+ memset(buf, 0, MCP2210_BUFFER_LENGTH);
+ buf[0] = MCP2210_GET_GPIO_PIN_DIR;
+ if (!mcp2210_send_recv(cgpu, buf, C_MCP_GETGPIOPINDIR))
+ return false;
+
+ buf[0] = MCP2210_SET_GPIO_PIN_DIR;
+
+ if (pin < 8) {
+ if (dir)
+ buf[4] |= (0x01u << pin);
+ else
+ buf[4] &= ~(0x01u << pin);
+ } else {
+ if (dir)
+ buf[5] |= 0x01u;
+ else
+ buf[5] &= ~0x01u;
+ }
+ return mcp2210_send_recv(cgpu, buf, C_MCP_SETGPIOPINDIR);
+}
diff --git a/mcp2210.h b/mcp2210.h
index eabdaf5..df04c91 100644
--- a/mcp2210.h
+++ b/mcp2210.h
@@ -39,5 +39,9 @@ struct gpio_pin {
bool mcp2210_send_recv(struct cgpu_info *cgpu, char *buf, enum usb_cmds cmd);
bool mcp2210_get_gpio_pinvals(struct cgpu_info *cgpu, struct gpio_pin *gp);
bool mcp2210_get_gpio_pindirs(struct cgpu_info *cgpu, struct gpio_pin *gp);
+bool mcp2210_get_gpio_pinval(struct cgpu_info *cgpu, int pin, int *val);
+bool mcp2210_set_gpio_pinval(struct cgpu_info *cgpu, int pin, int val);
+bool mcp2210_get_gpio_pindir(struct cgpu_info *cgpu, int pin, int *dir);
+bool mcp2210_set_gpio_pindir(struct cgpu_info *cgpu, int pin, int dir);
#endif /* MCP2210_H */