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authorPaul Fertser2013-05-05 00:46:48 +0400
committerGareth McMullin2013-05-14 12:34:53 +1200
commitcdaed128c1f2a53c195d3958427122296b37a570 (patch)
tree920cb7a5652cce93ffc9dea8a6852e824d6559ec /src/platforms/stlink
parente0fc21a2a715893331f49d9d838bc0d4a69cf84c (diff)
stlink: add support for SRST handling
This enables SRST signals in open drain mode for both stlinkv1 and stlinkv2 hardware platforms. Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Diffstat (limited to 'src/platforms/stlink')
-rw-r--r--src/platforms/stlink/platform.c15
-rw-r--r--src/platforms/stlink/platform.h8
2 files changed, 23 insertions, 0 deletions
diff --git a/src/platforms/stlink/platform.c b/src/platforms/stlink/platform.c
index e8435b9..08fcd32 100644
--- a/src/platforms/stlink/platform.c
+++ b/src/platforms/stlink/platform.c
@@ -98,6 +98,11 @@ int platform_init(void)
GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
gpio_set_mode(TDI_PORT, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, TDI_PIN);
+ uint16_t srst_pin = platform_hwversion() == 0 ?
+ SRST_PIN_V1 : SRST_PIN_V2;
+ gpio_set(SRST_PORT, srst_pin);
+ gpio_set_mode(SRST_PORT, GPIO_MODE_OUTPUT_50_MHZ,
+ GPIO_CNF_OUTPUT_OPENDRAIN, srst_pin);
gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
@@ -127,6 +132,16 @@ void platform_delay(uint32_t delay)
while(timeout_counter);
}
+void platform_srst_set_val(bool assert)
+{
+ uint16_t pin;
+ pin = platform_hwversion() == 0 ? SRST_PIN_V1 : SRST_PIN_V2;
+ if (assert)
+ gpio_clear(SRST_PORT, pin);
+ else
+ gpio_set(SRST_PORT, pin);
+}
+
void sys_tick_handler(void)
{
if(running_status)
diff --git a/src/platforms/stlink/platform.h b/src/platforms/stlink/platform.h
index cbfc0ba..1ee944c 100644
--- a/src/platforms/stlink/platform.h
+++ b/src/platforms/stlink/platform.h
@@ -79,6 +79,10 @@ extern usbd_device *usbdev;
#define SWDIO_PIN TMS_PIN
#define SWCLK_PIN TCK_PIN
+#define SRST_PORT GPIOB
+#define SRST_PIN_V1 GPIO1
+#define SRST_PIN_V2 GPIO0
+
#define LED_PORT GPIOA
/* Use PC14 for a "dummy" uart led. So we can observere at least with scope*/
#define LED_PORT_UART GPIOC
@@ -98,6 +102,9 @@ extern usbd_device *usbdev;
gpio_set_mode(USBUSART_PORT, GPIO_MODE_OUTPUT_2_MHZ, \
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USBUSART_TX_PIN);
+#define SRST_SET_VAL(x) \
+ platform_srst_set_val(x)
+
#define USB_DRIVER stm32f103_usb_driver
#define USB_IRQ NVIC_USB_LP_CAN_RX0_IRQ
#define USB_ISR usb_lp_can_rx0_isr
@@ -152,6 +159,7 @@ int platform_init(void);
void morse(const char *msg, char repeat);
const char *platform_target_voltage(void);
void platform_delay(uint32_t delay);
+void platform_srst_set_val(bool assert);
/* <cdcacm.c> */
void cdcacm_init(void);